*{margin:0;padding:0;box-sizing:border-box}body{font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;background:linear-gradient(135deg,#0f1419,#1a2332,#0d1117);color:#e6edf3;min-height:100vh;overflow-x:hidden}.container{max-width:1200px;margin:0 auto;padding:0 20px}header{position:fixed;top:0;width:100%;background:#161b22f2;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid #30363d;z-index:1000;transition:background .3s ease}nav{display:flex;justify-content:space-between;align-items:center;padding:1rem 0}.logo{font-size:1.5rem;font-weight:700;color:#58a6ff;display:flex;align-items:center;gap:.5rem}.logo:before{content:"⚡";font-size:1.8rem;animation:pulse 2s infinite}@keyframes pulse{0%,to{opacity:1}50%{opacity:.7}}.nav-links{display:flex;list-style:none;gap:2rem}.nav-links a{color:#e6edf3;text-decoration:none;position:relative;transition:color .3s}.nav-links a:after{content:"";position:absolute;bottom:-5px;left:0;width:0;height:2px;background:#58a6ff;transition:width .3s}.nav-links a:hover{color:#58a6ff}.nav-links a:hover:after{width:100%}main{margin-top:80px;padding:2rem 0}.hero{text-align:center;padding:4rem 0;position:relative;background:radial-gradient(circle,rgba(88,166,255,.1) 0%,transparent 70%)}.hero h1{font-size:3rem;margin-bottom:1rem;background:linear-gradient(135deg,#58a6ff,#39d353);-webkit-background-clip:text;-webkit-text-fill-color:transparent;animation:fadeInUp 1s ease}.hero p{color:#8b949e;font-size:1.2rem;animation:fadeInUp 1s ease .2s both}@keyframes fadeInUp{0%{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}.files-section{padding:4rem 0}.section-title{text-align:center;font-size:2.5rem;margin-bottom:3rem;color:#58a6ff}.turma-container{margin-bottom:2rem;border-radius:12px;overflow:hidden;background:#161b2280;border:1px solid #30363d}.turma-header{display:flex;justify-content:space-between;align-items:center;padding:1.5rem;cursor:pointer;background:#58a6ff1a;border-bottom:1px solid #58a6ff;transition:background .3s}.turma-header:hover{background:#58a6ff26}.turma-title{font-size:1.8rem;color:#58a6ff;font-weight:700}.turma-subtitle{font-size:1rem;color:#8b949e}.collapse-icon{font-size:1.5rem;color:#58a6ff;transition:transform .3s}.turma-container.active .collapse-icon{transform:rotate(180deg)}.turma-content{max-height:0;overflow:hidden;transition:max-height .4s ease}.turma-container.active .turma-content{max-height:2000px}.files-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:1.5rem;padding:2rem 0}.file-card{background:#161b22cc;border-radius:12px;border:1px solid #30363d;padding:1.5rem;transition:all .3s;position:relative}.file-card:hover{transform:translateY(-5px);border-color:#58a6ff;box-shadow:0 10px 30px #58a6ff33}.file-icon{font-size:2.5rem;margin-bottom:1rem;display:block}.file-card h3{font-size:1.2rem;margin-bottom:.8rem}.file-card p{color:#8b949e;margin-bottom:1.2rem;font-size:.9rem;line-height:1.5}.download-btn{background:linear-gradient(135deg,#238636,#39d353);color:#fff;border-radius:8px;padding:.7rem 1.2rem;text-decoration:none;font-weight:500;font-size:.9rem;display:inline-block;transition:all .3s}.download-btn:hover{transform:scale(1.05);box-shadow:0 5px 15px #39d3534d}footer{background:#161b22f2;border-top:1px solid #30363d;padding:2rem 0;text-align:center;color:#8b949e}.floating-shapes{display:none}@media(max-width:768px){.hero h1{font-size:2rem}.nav-links{display:none}.files-grid{grid-template-columns:1fr}.turma-title{font-size:1.5rem}}