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4rem;--radius-sm: 8px;--radius-md: 12px;--radius-lg: 16px;--radius-xl: 24px;--radius-full: 9999px;--max-width: 960px;--header-height: 56px;--mobile-nav-height: 64px;--touch-target-min: 44px;--touch-target-comfortable: 48px;background-color:var(--color-background);color:var(--color-text)}:root[data-theme=dark]{color-scheme:dark;--color-primary: #4d9fff;--color-primary-strong: #80bfff;--color-primary-soft: rgba(77, 159, 255, .12);--color-secondary: #34d399;--color-secondary-soft: rgba(52, 211, 153, .12);--color-background: #0a0a0a;--color-surface: #141414;--color-surface-elevated: #1f1f1f;--color-border: #2a2a2a;--color-border-light: #1f1f1f;--color-text: #fafafa;--color-text-muted: #a3a3a3;--color-text-light: #737373;--color-warmup: #ff8f66;--color-main: #4d9fff;--color-focus: #a78bfa;--color-cooldown: #34d399;--shadow-xs: 0 1px 2px rgba(0, 0, 0, .2);--shadow-sm: 0 2px 8px rgba(0, 0, 0, .3);--shadow-md: 0 4px 16px rgba(0, 0, 0, .4);--shadow-lg: 0 8px 32px rgba(0, 0, 0, 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dt{color:var(--color-secondary)}.exercise__link{display:inline-flex;align-items:center;justify-content:center;min-height:var(--touch-target-min);padding:var(--spacing-sm) var(--spacing-md);background:var(--color-primary-soft);color:var(--color-primary);border-radius:var(--radius-sm);font-weight:500;font-size:.875rem;align-self:flex-start;transition:all .15s ease}.exercise__link:hover{background:var(--color-primary);color:#fff;text-decoration:none}.exercise-catalog{list-style:none;padding:0;margin:0;display:grid;gap:var(--spacing-md);grid-template-columns:repeat(auto-fill,minmax(280px,1fr))}.exercise-card__inner{display:flex;flex-direction:column;gap:var(--spacing-sm);height:100%;padding:var(--spacing-lg);background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);transition:all .2s ease}.exercise-card__inner:hover{border-color:var(--color-primary);box-shadow:var(--shadow-sm)}.exercise-card__header h2{font-size:1.125rem;font-weight:600}.exercise-card__summary{margin:0;color:var(--color-text-muted);font-size:.875rem;line-height:1.5}.exercise-card__meta{display:flex;flex-wrap:wrap;gap:var(--spacing-md);margin:0}.exercise-card__meta>div{display:flex;flex-direction:column;gap:2px}.exercise-card__meta dt{font-size:.6875rem;text-transform:uppercase;letter-spacing:.05em;color:var(--color-text-light)}.exercise-card__meta dd{margin:0;font-size:.875rem;font-weight:500}.exercise-card__footer{margin-top:auto;padding-top:var(--spacing-sm)}.exercise-content{display:flex;flex-direction:column;gap:var(--spacing-lg)}.exercise-section{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:var(--spacing-lg);display:flex;flex-direction:column;gap:var(--spacing-md)}.exercise-section h2{font-size:1.125rem;padding-bottom:var(--spacing-sm);border-bottom:1px solid var(--color-border-light)}.exercise-related{background:var(--color-surface);border:1px 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dd{margin:0;font-size:.875rem;font-weight:500}.session-card__footer{margin-top:auto;padding-top:var(--spacing-sm)}.info-grid{display:grid;gap:var(--spacing-md);grid-template-columns:repeat(auto-fill,minmax(280px,1fr))}.info-card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:var(--spacing-lg);display:flex;flex-direction:column;gap:var(--spacing-sm)}.info-card h3{font-size:1.0625rem}.info-card ul{list-style:disc;padding-left:1.25rem;margin:0;color:var(--color-text-muted)}.info-card p{color:var(--color-text-muted)}.faq-list{display:flex;flex-direction:column;gap:var(--spacing-md)}.faq-list h2{font-size:1.25rem}.faq-item{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:var(--spacing-lg)}.faq-item h3{font-size:1rem;margin-bottom:var(--spacing-xs)}.faq-item p{color:var(--color-text-muted);font-size:.9375rem}@media(max-width:640px){main{padding:var(--spacing-md) 0 var(--spacing-xl)}.container{padding:0 var(--spacing-sm)}.stack{gap:var(--spacing-lg)}.site-header__inner{gap:var(--spacing-xs)}.site-header__brand-text{display:none}.site-header__nav{gap:0}.site-header__link{padding:0 var(--spacing-xs);font-size:.8125rem;min-height:36px}.site-header__link-full{display:none}.site-header__link-short{display:block}.hero{padding:var(--spacing-xl) 0}.hero__stats{gap:var(--spacing-lg)}.hero__stat-number{font-size:1.5rem}.hero__schema{grid-template-columns:repeat(2,1fr)}.schema-item{padding:var(--spacing-sm)}.schema-item__time{font-size:1rem}.session-controls{flex-direction:column;align-items:stretch;text-align:center}.exercise__toggle{padding:var(--spacing-md)}.exercise__title{font-size:.9375rem}.exercise__primary{font-size:.8125rem}.exercise__number{width:24px;height:24px;font-size:.75rem}.exercise__icon{width:32px;height:32px;font-size:1.5rem}.exercise__expanded{padding:0 var(--spacing-sm) var(--spacing-md)}.exercise__details{padding:var(--spacing-sm)}.exercise__link{width:100%}.category-grid,.exercise-catalog,.session-grid,.info-grid{grid-template-columns:1fr}a.category-card,.category-card,.exercise-card__inner,.session-card,.info-card,.exercise-section,.faq-item{padding:var(--spacing-md)}.contribute-card{flex-direction:column;text-align:center}.contribute-card__actions{width:100%;flex-direction:column}.contribute-card__actions .button{width:100%}}@media(max-width:380px){.site-header__brand span:last-child{display:none}.hero__stats{flex-wrap:wrap;gap:var(--spacing-md)}}@media(pointer:coarse)and (min-width:641px){.exercise__toggle{min-height:56px}.button{min-height:48px}}@media(hover:hover){a.category-card:hover{transform:translateY(-2px)}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}html{scroll-behavior:auto}}