.lab-arriba{position:relative;padding:1.5rem 1.25rem 3rem;overflow:hidden}.lab-arriba:before{content:"";position:absolute;inset:-20% -10% auto;height:520px;background:radial-gradient(50% 60% at 30% 30%,rgba(162,242,76,.14),transparent 70%),radial-gradient(40% 50% at 80% 20%,rgba(124,58,237,.16),transparent 70%);pointer-events:none}.lab-intro{position:relative;max-width:1240px;margin:0 auto 1.8rem}.lab-intro .cur-h1{font-size:clamp(1.9rem,5vw,3.1rem);max-width:22ch}.lab-intro .cur-lead{max-width:46rem}.lab-grid{position:relative;max-width:1240px;margin:0 auto;display:grid;gap:2rem}.lab-grid>*{min-width:0}@media(min-width:1000px){.lab-grid{grid-template-columns:1.15fr 1fr;align-items:start}.lab-grid .demo{position:sticky;top:6.5rem}.lab-grid .demo .term{height:clamp(380px,62vh,560px)}}.lab-ejercicios h2{font-family:var(--font-display);color:var(--text-primary);font-size:clamp(1.3rem,3vw,1.6rem);margin:0 0 .4rem}.lab-ejercicios>p{color:var(--text-secondary);font-size:1rem;line-height:1.6;margin:0 0 1.1rem}.lab-lista{list-style:none;margin:0;padding:0;display:grid;gap:.9rem;counter-reset:ej}.lab-ej{counter-increment:ej;padding:1rem 1.1rem 1.05rem;border-radius:14px;background:var(--bg-card);border:1px solid rgba(255,255,255,.07);scroll-margin-top:7rem}.lab-ej-cabeza{display:flex;align-items:center;gap:.55rem;margin-bottom:.35rem}.lab-ej-cabeza:before{content:counter(ej,decimal-leading-zero);font:700 .72rem var(--font-mono);color:var(--accent-green)}.lab-tema{font:600 .78rem var(--font-mono);letter-spacing:.08em;text-transform:uppercase;color:var(--text-secondary);padding:.15rem .5rem;border:1px solid rgba(255,255,255,.12);border-radius:99px}.lab-ej h3{font-size:1.1rem;color:var(--text-primary);margin:0 0 .35rem;line-height:1.35}.lab-ej p{color:var(--text-secondary);font-size:1rem;line-height:1.6;margin:0}.lab-cmds{display:grid;gap:.5rem;margin:.7rem 0}.lab-ej .demo-sug{display:block;width:100%;min-height:44px;text-align:left;font-size:.95rem;line-height:1.5;padding:.55rem .75rem;white-space:normal;overflow-wrap:anywhere}.lab-ej .demo-sug:before{content:"$ ";color:var(--text-secondary)}.lab-vera{border-left:2px solid rgba(162,242,76,.45);padding-left:.7rem}.lab-vera b{color:var(--text-primary);font-weight:600}.lab-vera code{font:.9rem var(--font-mono);color:var(--text-primary);overflow-wrap:anywhere}.lab-texto code{font:.9em var(--font-mono);color:var(--accent-green);overflow-wrap:anywhere}.lab-cta{display:flex;flex-wrap:wrap;gap:.6rem;margin:1.4rem 0 .4rem}.lab-cta .btn{flex:1 1 14rem;justify-content:center;text-align:center}.lab-tabla{width:100%;border-collapse:collapse;font-size:.92rem;margin:.4rem 0 1.4rem}.lab-tabla th,.lab-tabla td{text-align:left;vertical-align:top;padding:.55rem .6rem;border-bottom:1px solid rgba(255,255,255,.08)}.lab-tabla th{color:var(--text-primary);font-weight:600;width:34%}@media(max-width:520px){.lab-tabla,.lab-tabla tbody,.lab-tabla tr,.lab-tabla th,.lab-tabla td{display:block;width:auto}.lab-tabla th{border-bottom:0;padding-bottom:0}}