*{margin:0;padding:0;box-sizing:border-box}:root{--bg-primary: #ffffff;--bg-secondary: #f8f9fa;--text-primary: #212529;--text-secondary: #6c757d;--accent: #007bff;--card-bg: #ffffff;--shadow: rgba(0, 0, 0, .1)}[data-theme=dark]{--bg-primary: #1a1a1a;--bg-secondary: #2d2d2d;--text-primary: #ffffff;--text-secondary: #adb5bd;--accent: #4dabf7;--card-bg: #2d2d2d;--shadow: rgba(255, 255, 255, .1)}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,sans-serif;background-color:var(--bg-primary);color:var(--text-primary);transition:background-color .3s ease,color .3s ease;min-height:100vh}.container{max-width:1200px;margin:0 auto;padding:2rem;text-align:center;min-height:100vh;display:flex;flex-direction:column;justify-content:center}.title{font-size:2.5rem;font-weight:300;margin-bottom:1rem;color:var(--text-primary);letter-spacing:-.02em}.subtitle{font-size:1.1rem;color:var(--text-secondary);margin-bottom:3rem;font-weight:400}.exercises-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:2rem;margin-top:2rem}.social-section{margin-top:4rem;padding-top:2rem;border-top:1px solid var(--text-secondary);opacity:.7}.social-title{font-size:1.2rem;font-weight:400;margin-bottom:1.5rem;color:var(--text-secondary)}.social-links{display:flex;justify-content:center;gap:2rem;flex-wrap:wrap}.social-link{background:var(--card-bg);border-radius:50%;width:60px;height:60px;display:flex;align-items:center;justify-content:center;text-decoration:none;color:var(--text-primary);font-size:1.5rem;transition:all .3s cubic-bezier(.4,0,.2,1);box-shadow:0 4px 6px var(--shadow);border:1px solid transparent}.social-link:hover{transform:translateY(-4px);box-shadow:0 8px 16px var(--shadow);border-color:var(--accent)}@media(max-width:768px){.social-links{gap:1.5rem}.social-link{width:50px;height:50px;font-size:1.3rem}}.exercise-card{background:var(--card-bg);border-radius:16px;padding:3rem 2rem;text-decoration:none;color:inherit;transition:all .3s cubic-bezier(.4,0,.2,1);box-shadow:0 4px 6px var(--shadow);border:1px solid transparent}.exercise-card:hover{transform:translateY(-8px);box-shadow:0 12px 24px var(--shadow);border-color:var(--accent)}.exercise-icon{font-size:4rem;margin-bottom:1rem;display:block;transition:transform .3s ease}.exercise-card:hover .exercise-icon{transform:scale(1.1)}.exercise-title{font-size:1.5rem;font-weight:500;margin-bottom:.5rem;color:var(--text-primary)}.exercise-description{font-size:.9rem;color:var(--text-secondary);opacity:.8}@media(max-width:768px){.container{padding:1.5rem}.title{font-size:2rem}.exercises-grid{grid-template-columns:1fr;gap:1.5rem}.exercise-card{padding:2rem 1.5rem}}