.bg-page{max-width:1200px;margin:0 auto;padding:1rem 1rem 4rem}.bg-btn{cursor:pointer;transition:transform var(--dur-fast) var(--ease-spring), background .15s, box-shadow .15s;border:none;border-radius:10px;justify-content:center;align-items:center;gap:.4rem;padding:.7rem 1.3rem;font-family:inherit;font-size:.9rem;font-weight:600;line-height:1.2;text-decoration:none;display:inline-flex}.bg-btn--lg{padding:.9rem 1.6rem;font-size:.95rem}.bg-btn--primary{background:var(--accent);color:var(--white);box-shadow:0 4px 12px color-mix(in oklch, var(--accent), transparent 75%)}.bg-btn--primary:hover:not(:active){box-shadow:0 6px 16px color-mix(in oklch, var(--accent), transparent 65%);transform:translateY(-1px)}.bg-btn--ghost{color:var(--text);border:1px solid var(--border-color,color-mix(in srgb, var(--white), transparent 88%));background:0 0}.bg-btn--ghost:hover{border-color:var(--accent);color:var(--accent)}.bg-hero{isolation:isolate;padding:4rem 1.5rem 3rem;position:relative;overflow:hidden}.bg-hero-ambient{z-index:-1;pointer-events:none;background:radial-gradient(40% 50% at 30% 35%, color-mix(in oklch, var(--accent), transparent 72%), transparent 60%), radial-gradient(40% 50% at 70% 60%, color-mix(in oklch, var(--accent), transparent 82%), transparent 60%);filter:blur(60px);opacity:.85;animation:28s ease-in-out infinite pl-nebula-drift;position:absolute;inset:-10% -10% -30%}[data-theme=light] .bg-hero-ambient{background:radial-gradient(40% 50% at 30% 35%, color-mix(in oklch, var(--accent), transparent 86%), transparent 60%), radial-gradient(40% 50% at 70% 60%, color-mix(in oklch, var(--accent), transparent 90%), transparent 60%);opacity:.7}@media (prefers-reduced-motion:reduce){.bg-hero-ambient{animation:none}}.bg-hero-inner{max-width:1100px;margin:0 auto}.bg-hero-text{min-width:0}.bg-hero-lead{max-width:680px;color:var(--text-secondary,var(--muted));margin:0 0 .75rem;font-size:1.05rem;line-height:1.6}.bg-hero-stats{color:var(--muted);letter-spacing:.02em;margin:0 0 1.75rem;font-size:.85rem}.bg-hero-actions{flex-wrap:wrap;gap:.75rem;display:flex}.bg-section{border-top:1px solid color-mix(in oklch, var(--accent), transparent 94%);padding:3rem 1rem}.bg-section-header{max-width:760px;margin:0 0 2rem}.bg-section-header--center{text-align:center;margin-left:auto;margin-right:auto}.bg-section-header h2{letter-spacing:-.01em;color:var(--text);margin:0 0 .5rem;font-size:clamp(1.55rem,3vw,2.05rem);line-height:1.2}.bg-section-header p{color:var(--muted);margin:0;font-size:1rem;line-height:1.55}.bg-pin-card{border:1px solid color-mix(in oklch, var(--accent), transparent 70%);background:linear-gradient(135deg, color-mix(in oklch, var(--accent), transparent 90%), color-mix(in srgb, var(--accent), transparent 92%));color:inherit;border-radius:18px;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);gap:0;text-decoration:none;transition:border-color .18s,transform .18s,box-shadow .18s;display:grid;overflow:hidden}.bg-pin-card:hover{border-color:color-mix(in oklch, var(--accent), transparent 45%);box-shadow:0 10px 28px color-mix(in oklch, var(--accent), transparent 88%);transform:translateY(-2px)}.bg-pin-media{aspect-ratio:3/2;background:color-mix(in oklch, var(--accent), transparent 94%);overflow:hidden}.bg-pin-media img{object-fit:cover;width:100%;height:100%;transition:transform .3s}.bg-pin-card:hover .bg-pin-media img{transform:scale(1.03)}.bg-pin-body{flex-direction:column;justify-content:center;gap:.65rem;padding:2rem;display:flex}.bg-pin-eyebrow{background:var(--accent);color:var(--white);letter-spacing:.08em;text-transform:uppercase;border-radius:999px;align-self:flex-start;align-items:center;gap:.4rem;padding:.32rem .8rem;font-size:.72rem;font-weight:700;display:inline-flex}.bg-pin-title{color:var(--text);margin:0;font-size:clamp(1.4rem,2.6vw,1.85rem);line-height:1.25}.bg-pin-desc{color:var(--muted);margin:0;font-size:.97rem;line-height:1.6}.bg-pin-meta{flex-wrap:wrap;gap:.5rem;margin-top:.4rem;display:flex}@media (width<=720px){.bg-pin-card{grid-template-columns:1fr}}.bg-tracks-row{flex-wrap:wrap;gap:.5rem;margin-bottom:1.25rem;display:flex}.bg-track-btn{appearance:none;border:1px solid var(--border-color,color-mix(in srgb, var(--white), transparent 88%));color:var(--text);font:inherit;cursor:pointer;transition:border-color .15s, color .15s, background .15s, transform var(--dur-fast) var(--ease-spring);background:0 0;border-radius:999px;align-items:center;gap:.55rem;padding:.55rem 1.1rem;font-size:.92rem;font-weight:600;display:inline-flex}.bg-track-btn:hover{border-color:var(--accent);color:var(--accent)}.bg-track-btn.is-active{border-color:var(--accent);color:var(--white);background:var(--accent);box-shadow:0 4px 12px color-mix(in oklch, var(--accent), transparent 75%)}.bg-track-count{background:color-mix(in oklch, var(--accent), transparent 88%);min-width:1.5rem;height:1.5rem;color:var(--accent);border-radius:999px;justify-content:center;align-items:center;padding:0 .4rem;font-size:.72rem;font-weight:700;line-height:1;display:inline-flex}.bg-track-btn.is-active .bg-track-count{background:color-mix(in srgb, var(--white), transparent 78%);color:var(--white)}.bg-tags-wrap{align-items:center;gap:.85rem;margin-top:1rem;display:flex}.bg-tags-eyebrow{letter-spacing:.1em;text-transform:uppercase;color:var(--muted);flex-shrink:0;font-size:.72rem;font-weight:700}.bg-tags-list{flex-wrap:wrap;flex:1;align-items:center;gap:.5rem;min-width:0;display:flex}.bg-tag-btn{appearance:none;border:1px solid var(--border-color,color-mix(in srgb, var(--white), transparent 88%));color:var(--muted);font:inherit;cursor:pointer;white-space:nowrap;transition:border-color .15s, color .15s, background .15s, transform var(--dur-fast) var(--ease-spring);background:0 0;border-radius:999px;flex-shrink:0;padding:.3rem .8rem;font-size:.78rem;font-weight:600}.bg-tag-btn:hover{border-color:var(--accent);color:var(--accent)}.bg-tag-btn.is-active{border-color:var(--accent);color:var(--accent);background:color-mix(in oklch, var(--accent), transparent 90%)}@media (width<=720px){.bg-tags-wrap{flex-direction:column;align-items:flex-start;gap:.5rem}}.bg-page.is-filtering .bg-pin,.bg-page.is-filtering .bg-latest,.bg-page.is-filtering .bg-featured,.bg-page.is-filtering .bg-lead,.bg-page.is-filtering .bg-outside,.bg-page.is-filtering .bg-pre,.bg-page.is-filtering .bg-final{display:none}.bg-no-results{border:1px dashed color-mix(in oklch, var(--accent), transparent 72%);text-align:center;border-radius:12px;margin-top:1.5rem;padding:1.5rem}.bg-no-results h3{color:var(--text);margin:0 0 .4rem;font-size:1.1rem}.bg-no-results p{color:var(--muted);margin:0 0 1rem;font-size:.95rem}.bg-no-results[hidden]{display:none}.bg-card-pillrow{flex-wrap:wrap;gap:.35rem;margin-bottom:.7rem;display:flex}.bg-pill{letter-spacing:.04em;white-space:nowrap;border-radius:999px;align-items:center;padding:.18rem .55rem;font-size:.7rem;font-weight:700;line-height:1.4;display:inline-flex}.bg-pill--reading{background:color-mix(in srgb, var(--white), transparent 96%);color:var(--muted);border:1px solid var(--border-color,color-mix(in srgb, var(--white), transparent 90%))}.bg-pill--level-beginner{background:color-mix(in oklch, var(--success), transparent 88%);color:var(--success)}.bg-pill--level-intermediate{background:color-mix(in oklch, var(--accent), transparent 88%);color:var(--accent)}.bg-pill--level-senior{background:color-mix(in srgb, var(--level-advanced), transparent 88%);color:var(--level-advanced)}.bg-pill--track-frontend{background:color-mix(in srgb, var(--track-frontend), transparent 90%);color:var(--track-frontend)}.bg-pill--track-backend{background:color-mix(in oklch, var(--accent), transparent 90%);color:var(--accent)}.bg-pill--track-data{background:color-mix(in oklch, var(--success), transparent 90%);color:var(--success)}.bg-pill--track-devops{background:color-mix(in oklch, var(--warn), transparent 90%);color:var(--warn)}.bg-card{background:var(--surface,color-mix(in srgb, var(--white), transparent 97%));border:1px solid var(--border-color,color-mix(in srgb, var(--white), transparent 92%));cursor:pointer;border-radius:14px;flex-direction:column;transition:transform .18s,border-color .18s,box-shadow .18s;display:flex;position:relative;overflow:hidden}.bg-card:hover{border-color:var(--accent);box-shadow:0 10px 24px color-mix(in oklch, var(--accent), transparent 90%);transform:translateY(-2px)}.bg-card[data-hidden-by-filter]{display:none!important}.bg-card-media{aspect-ratio:3/2;background:color-mix(in oklch, var(--accent), transparent 94%);overflow:hidden}.bg-card-media--lg{aspect-ratio:3/2}.bg-card-media img{object-fit:cover;width:100%;height:100%;transition:transform .3s;display:block}.bg-card:hover .bg-card-media img{transform:scale(1.04)}.bg-card-body{flex-direction:column;flex:1;gap:.5rem;padding:1.1rem 1.2rem 1.3rem;display:flex}.bg-card-title{margin:0;font-size:1.05rem;line-height:1.3}.bg-card-titlelink{color:var(--text);text-decoration:none}.bg-card-titlelink:after{content:"";z-index:1;position:absolute;inset:0}.bg-card:hover .bg-card-title{color:var(--accent)}.bg-card-desc{color:var(--muted);-webkit-line-clamp:3;-webkit-box-orient:vertical;flex:1;margin:0;font-size:.92rem;line-height:1.55;display:-webkit-box;overflow:hidden}.bg-card-date{color:var(--muted);margin-top:.2rem;font-size:.78rem}.bg-latest-grid{grid-template-columns:repeat(auto-fit,minmax(min(280px,100%),1fr));gap:1.25rem;display:grid}.bg-featured-grid{grid-template-columns:repeat(auto-fit,minmax(min(320px,100%),1fr));gap:1.5rem;display:grid}.bg-lead-shell{background:linear-gradient(135deg, color-mix(in oklch, var(--accent), transparent 92%), color-mix(in srgb, var(--accent), transparent 95%));border:1px solid color-mix(in oklch, var(--accent), transparent 80%);border-radius:18px;padding:2rem 1.5rem 2.25rem}.bg-lead-grid{grid-template-columns:repeat(auto-fit,minmax(min(260px,100%),1fr));gap:1rem;display:grid}.bg-lead-card{padding:var(--card-pad);border-radius:var(--radius-xl);background:var(--surface-1);box-shadow:var(--elev-1);color:inherit;border:none;flex-direction:column;gap:.5rem;text-decoration:none;transition:transform .15s,box-shadow .15s;display:flex}.bg-lead-card:hover{border-color:color-mix(in oklch, var(--accent), transparent 65%);box-shadow:0 8px 22px color-mix(in oklch, var(--accent), transparent 90%);transform:translateY(-2px)}.bg-lead-icon{background:color-mix(in oklch, var(--accent), transparent 90%);width:44px;height:44px;color:var(--accent);border-radius:10px;justify-content:center;align-items:center;margin-bottom:.4rem;display:inline-flex}.bg-lead-card h3{color:var(--text);margin:0;font-size:1.05rem;line-height:1.3}.bg-lead-card p{color:var(--muted);flex:1;margin:0;font-size:.93rem;line-height:1.55}.bg-lead-cta{color:var(--accent);align-items:center;gap:.4rem;margin-top:.4rem;font-size:.92rem;font-weight:600;display:inline-flex}.bg-lead-card:hover .bg-lead-cta svg{transform:translate(2px)}.bg-lead-cta svg{transition:transform .15s}.bg-group{margin-bottom:2.5rem}.bg-group:last-child{margin-bottom:0}.bg-group-title{color:var(--text);align-items:center;gap:.55rem;margin:0 0 1rem;font-size:1.15rem;font-weight:700;display:inline-flex}.bg-group-count{color:var(--muted);background:color-mix(in oklch, var(--accent), transparent 92%);border-radius:999px;padding:.2rem .55rem;font-size:.78rem;font-weight:600}.bg-group-list{gap:.85rem;display:grid}.bg-list-item{border:1px solid var(--border-color,color-mix(in srgb, var(--white), transparent 92%));background:var(--surface,color-mix(in srgb, var(--white), transparent 98%));cursor:pointer;border-radius:12px;grid-template-columns:220px 1fr;gap:1.25rem;padding:0;transition:border-color .18s,transform .18s,box-shadow .18s;display:grid;position:relative;overflow:hidden}.bg-list-item:hover{border-color:var(--accent);box-shadow:0 8px 22px color-mix(in oklch, var(--accent), transparent 92%);transform:translateY(-1px)}.bg-list-item[data-hidden-by-filter]{display:none!important}.bg-list-media{background:color-mix(in oklch, var(--accent), transparent 95%);overflow:hidden}.bg-list-media img{object-fit:cover;width:100%;height:100%;transition:transform .3s;display:block}.bg-list-item:hover .bg-list-media img{transform:scale(1.03)}.bg-list-body{flex-direction:column;gap:.35rem;padding:1.1rem 1.4rem 1.1rem 0;display:flex}.bg-list-title{margin:0;font-size:1.02rem;line-height:1.3}.bg-list-title a{color:var(--text);text-decoration:none}.bg-list-item:hover .bg-list-title a{color:var(--accent)}.bg-list-desc{color:var(--muted);-webkit-line-clamp:2;-webkit-box-orient:vertical;margin:0;font-size:.9rem;line-height:1.55;display:-webkit-box;overflow:hidden}@media (width<=720px){.bg-list-item{grid-template-columns:1fr}.bg-list-media{aspect-ratio:3/2}.bg-list-body{padding:1rem 1.2rem 1.2rem}}.bg-empty{text-align:center;color:var(--muted);border-top:1px solid color-mix(in oklch, var(--accent), transparent 94%);padding:4rem 1rem}.bg-empty p{margin:0 0 1.25rem}.bg-outside-grid{grid-template-columns:repeat(auto-fit,minmax(min(280px,100%),1fr));gap:1.25rem;display:grid}.bg-outside-card{background:var(--surface,color-mix(in srgb, var(--white), transparent 97%));border:1px solid var(--border-color,color-mix(in srgb, var(--white), transparent 92%));color:inherit;border-radius:14px;flex-direction:column;text-decoration:none;transition:transform .18s,box-shadow .18s,border-color .18s;display:flex;overflow:hidden}.bg-outside-card:hover,.bg-outside-card:focus-visible{border-color:var(--accent);box-shadow:0 10px 24px color-mix(in srgb, var(--black), transparent 82%);transform:translateY(-2px)}.bg-outside-thumb{aspect-ratio:3/2;background:var(--black);position:relative;overflow:hidden}.bg-outside-thumb img{object-fit:cover;width:100%;height:100%;transition:transform .3s;display:block}.bg-outside-card:hover .bg-outside-thumb img{transform:scale(1.04)}.bg-outside-play{background:color-mix(in srgb, var(--black), transparent 35%);width:56px;height:56px;color:var(--white);border-radius:50%;place-items:center;margin:auto;font-size:1.4rem;transition:background .18s,transform .18s;display:grid;position:absolute;inset:0}.bg-outside-card:hover .bg-outside-play{background:var(--accent);transform:scale(1.06)}.bg-outside-duration{background:color-mix(in srgb, var(--black), transparent 22%);color:var(--white);font-variant-numeric:tabular-nums;border-radius:4px;padding:.18rem .4rem;font-size:.72rem;position:absolute;bottom:8px;right:8px}.bg-outside-body{flex-direction:column;flex:1;gap:.45rem;padding:.9rem 1.1rem 1.15rem;display:flex}.bg-outside-meta{color:var(--muted);flex-direction:column;align-items:flex-start;gap:.25rem;font-size:.75rem;display:flex}.bg-outside-level{text-transform:uppercase;letter-spacing:.06em;color:var(--accent);font-weight:700}.bg-outside-author{line-height:1.35}.bg-outside-title{margin:0;font-size:.98rem;font-weight:700;line-height:1.35}.bg-outside-why{color:var(--muted);-webkit-line-clamp:3;-webkit-box-orient:vertical;margin:0;font-size:.83rem;line-height:1.5;display:-webkit-box;overflow:hidden}.bg-pre-grid{grid-template-columns:repeat(auto-fit,minmax(min(280px,100%),1fr));gap:1.25rem;display:grid}.bg-pre-card{background:var(--surface,color-mix(in srgb, var(--white), transparent 97%));border:1px solid var(--border-color,color-mix(in srgb, var(--white), transparent 92%));color:inherit;border-radius:14px;flex-direction:column;gap:.5rem;padding:1.5rem;text-decoration:none;transition:border-color .15s,transform .15s;display:flex}.bg-pre-card:hover{border-color:color-mix(in oklch, var(--accent), transparent 65%);transform:translateY(-2px)}.bg-pre-icon{background:color-mix(in oklch, var(--accent), transparent 92%);width:40px;height:40px;color:var(--accent);border-radius:8px;justify-content:center;align-items:center;margin-bottom:.4rem;display:inline-flex}.bg-pre-card h3{color:var(--text);margin:0;font-size:1.02rem;line-height:1.3}.bg-pre-card p{color:var(--muted);flex:1;margin:0;font-size:.92rem;line-height:1.55}.bg-pre-cta{color:var(--accent);align-items:center;gap:.35rem;margin-top:.4rem;font-size:.9rem;font-weight:600;display:inline-flex}.bg-pre-card:hover .bg-pre-cta svg{transform:translate(2px)}.bg-pre-cta svg{transition:transform .15s}.bg-final-grid{grid-template-columns:repeat(auto-fit,minmax(min(260px,100%),1fr));gap:1rem;display:grid}.bg-final-card{background:var(--surface,color-mix(in srgb, var(--white), transparent 97%));border:1px solid var(--border-color,color-mix(in srgb, var(--white), transparent 92%));text-align:center;border-radius:14px;flex-direction:column;align-items:center;gap:1rem;padding:1.75rem 1.5rem;display:flex}.bg-final-icon{background:color-mix(in oklch, var(--accent), transparent 90%);width:44px;height:44px;color:var(--accent);border-radius:10px;justify-content:center;align-items:center;display:inline-flex}.bg-final-q{color:var(--text);min-height:2.8em;margin:0;font-size:1rem;font-weight:600;line-height:1.4}