.exercise-intro{padding:var(--space-7) 0 var(--space-5)}.exercise-intro .difficulty{margin-bottom:var(--space-4)}.exercise-intro h1{color:var(--color-primary);margin-top:var(--space-4)}.exercise-subtitle{margin-bottom:var(--space-4)}.exercise-content{margin-bottom:var(--space-10)}.exercise-content h2{margin-top:var(--space-8)}.exercise-content ul{padding-left:var(--space-6);margin-bottom:var(--space-5)}.exercise-content ul li{margin-bottom:var(--space-2)}.steps ol{counter-reset:step-counter;margin-bottom:var(--space-5)}.steps ol li{counter-increment:step-counter;display:flex;align-items:flex-start;gap:var(--space-3);padding:var(--space-3) 0;border-bottom:1px solid var(--color-border)}.steps ol li:last-child{border-bottom:none}.steps ol li:before{content:counter(step-counter);display:flex;align-items:center;justify-content:center;min-width:28px;height:28px;border-radius:50%;background:var(--color-primary);color:var(--color-on-primary);font-weight:700;font-size:var(--font-size-sm);flex-shrink:0}.exercise-content p{margin-bottom:var(--space-5)}.exercise-content strong{color:var(--color-primary-dark)}.info-box{background:linear-gradient(135deg,var(--color-primary-50),var(--color-accent-06));border:1px solid var(--color-border);border-radius:var(--border-radius);padding:var(--space-5);padding-left:calc(var(--space-1) + var(--space-5));margin-bottom:var(--space-8);position:relative;overflow:hidden;box-shadow:var(--shadow-sm)}.info-box:before{content:"";position:absolute;top:0;left:0;bottom:0;width:var(--space-1);background:linear-gradient(180deg,var(--color-primary),var(--color-accent))}.info-box h2{margin-top:0;display:flex;align-items:center;gap:var(--space-2)}.info-box h2 .icon-lightbulb{font-size:var(--icon-size-md);line-height:1}.info-box p{line-height:var(--line-height-relaxed)}.info-link{margin-bottom:0}.info-link a{color:var(--color-primary);font-weight:700;text-decoration:underline;text-underline-offset:var(--underline-offset);text-decoration-thickness:var(--underline-thickness)}.exercise-summary{padding:var(--space-7) 0 var(--space-8)}.tips-list li{padding:var(--space-3) 0;border-bottom:1px solid var(--color-border)}.tips-list li:last-child{border-bottom:none;padding-bottom:var(--space-5)}.last-p{margin-bottom:0}.related-exercises{border-top:1px solid var(--color-border);padding-top:var(--space-8);margin-bottom:var(--space-8)}.related-exercises h2{font-size:var(--font-size-lg);margin-bottom:var(--space-4)}.related-exercises-list{display:flex;flex-direction:column;gap:var(--space-3);padding:var(--space-1);margin:calc(-1 * var(--space-1))}.related-exercise-card{position:relative;display:flex;align-items:center;gap:var(--space-3);padding:var(--space-3) var(--space-4);border-radius:var(--border-radius);background-color:var(--color-surface);border:1px solid var(--color-border);box-shadow:var(--shadow-sm);overflow:hidden;text-decoration:none;color:var(--color-text);transition:transform var(--transition-elegant),box-shadow var(--transition-elegant),border-color var(--transition-elegant)}.related-exercise-card:before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--color-primary),var(--color-accent));opacity:0;transition:opacity var(--transition-elegant)}@media(hover:hover){.related-exercise-card:hover{transform:translateY(var(--hover-lift));box-shadow:var(--shadow-card-hover);border-color:var(--color-primary);text-decoration:none}.related-exercise-card:hover:before{opacity:1}.related-exercise-card:hover .related-exercise-icon{transform:scale(var(--hover-scale)) rotate(var(--hover-rotate))}}.related-exercise-card:focus-visible{outline:var(--focus-outline);outline-offset:var(--focus-offset)}.related-exercise-icon{font-size:var(--font-size-xl);flex-shrink:0;width:44px;height:44px;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--color-primary-50),var(--color-accent-06));border-radius:var(--border-radius);box-shadow:var(--shadow-sm);transition:transform var(--transition-elegant)}.related-exercise-title{font-weight:700;overflow-wrap:anywhere;min-width:0}.exercise-nav{display:flex;flex-direction:column;gap:var(--space-4);padding:var(--space-8) 0;border-top:1px solid var(--color-border)}.exercise-nav-link{display:flex;flex-direction:column;justify-content:center;gap:var(--space-1);text-decoration:none;color:var(--color-text);padding:var(--space-4) var(--space-5);border-radius:var(--border-radius);min-height:var(--min-touch-target);max-width:100%;width:100%;background:var(--color-surface);border:1px solid var(--color-border);box-shadow:var(--shadow-sm);position:relative;overflow:hidden;transition:transform var(--transition-elegant),box-shadow var(--transition-elegant),border-color var(--transition-base)}.exercise-nav-prev:before,.exercise-nav-next:before{content:"";position:absolute;top:0;bottom:0;width:3px;background:linear-gradient(180deg,var(--color-primary),var(--color-accent));opacity:0;transition:opacity var(--transition-elegant)}.exercise-nav-prev:before{left:0}.exercise-nav-next:before{right:0}@media(hover:hover){.exercise-nav-link:hover{transform:translateY(var(--hover-lift));box-shadow:var(--shadow-card-hover);border-color:var(--color-primary);text-decoration:none}.exercise-nav-link:hover:before{opacity:1}.exercise-nav-link:hover .exercise-nav-label{color:var(--color-primary)}}.exercise-nav-link:focus-visible{outline:var(--focus-outline);outline-offset:var(--focus-offset)}@media(prefers-reduced-motion:reduce){.exercise-nav-link,.exercise-nav-prev:before,.exercise-nav-next:before{transition:none}}.exercise-nav-next{text-align:left}.exercise-nav-label{font-size:var(--font-size-sm);color:var(--color-text-muted);transition:color var(--transition-base)}.exercise-nav-title{font-weight:700;color:var(--color-primary)}[data-theme=dark] .exercise-content strong{color:var(--color-primary-light)}[data-theme=dark] .info-box{box-shadow:var(--shadow-md)}[data-theme=dark] .tips-list li{border-color:var(--color-border)}[data-theme=dark] .steps ol li:before{color:var(--color-bg)}@media(min-width:768px){.exercise-intro{padding:var(--space-10) 0 var(--space-8)}.info-box{padding:var(--space-7);padding-left:calc(var(--space-1) + var(--space-7))}.steps ol li{gap:var(--space-4);padding:var(--space-4) 0}.steps ol li:before{min-width:32px;height:32px;font-size:var(--font-size-base)}.exercise-summary{padding:var(--space-10) 0 var(--space-12)}.exercise-nav{flex-direction:row;justify-content:space-between}.exercise-nav-link{max-width:45%;width:auto}.exercise-nav-next{text-align:right;margin-left:auto}.related-exercises-list{flex-direction:row}.related-exercise-card{flex:1}}@media(prefers-reduced-motion:reduce){.related-exercise-card,.related-exercise-card:before,.related-exercise-icon{transition:none}}