*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth}html,body{background-color:var(--bg-light)}body{font-family:Nunito,Segoe UI,-apple-system,BlinkMacSystemFont,sans-serif;background:linear-gradient(135deg,#667eea,#764ba2);min-height:100vh;color:#333;line-height:1.6}img{max-width:100%;display:block}:root{--primary-color: #4CAF50;--secondary-color: #2196F3;--accent-color: #FF9800;--warning-color: #f44336;--success-color: #8BC34A;--text-dark: #333;--text-light: #fff;--bg-light: #f5f5f5;--border-radius: 16px;--shadow-sm: 0 2px 8px rgba(0, 0, 0, .08);--shadow-md: 0 4px 16px rgba(0, 0, 0, .1);--shadow-lg: 0 12px 40px rgba(0, 0, 0, .15);--transition: all .3s cubic-bezier(.4, 0, .2, 1)}.container{max-width:1200px;margin:0 auto;padding:20px}.btn{padding:12px 24px;border:none;border-radius:25px;font-size:16px;font-weight:600;cursor:pointer;transition:var(--transition);display:inline-flex;align-items:center;justify-content:center;gap:8px;white-space:nowrap;position:relative;overflow:hidden}.btn:before{content:"";position:absolute;top:50%;left:50%;width:0;height:0;border-radius:50%;background:#ffffff80;transform:translate(-50%,-50%);transition:width .6s,height .6s}.btn:active:before{width:300px;height:300px}.btn:hover{transform:translateY(-2px);box-shadow:0 8px 24px #0003}.btn:active{transform:translateY(0)}.btn:disabled{opacity:.6;cursor:not-allowed;transform:none}.btn.btn-primary{background:linear-gradient(135deg,var(--primary-color),#45a049);color:var(--text-light);box-shadow:0 4px 16px #4caf504d}.btn.btn-primary:hover{box-shadow:0 8px 28px #4caf5066}.btn.btn-secondary{background:linear-gradient(135deg,var(--secondary-color),#1976D2);color:var(--text-light);box-shadow:0 4px 16px #2196f34d}.btn.btn-secondary:hover{box-shadow:0 8px 28px #2196f366}.btn.btn-outline{background:transparent;border:2px solid var(--primary-color);color:var(--primary-color);font-weight:700}.btn.btn-outline:hover{background:#4caf501a}.btn.btn-accent{background:linear-gradient(135deg,var(--accent-color),#F57C00);color:var(--text-light);box-shadow:0 4px 16px #ff98004d}.btn.btn-accent:hover{box-shadow:0 8px 28px #ff980066}.card{background:#fff;border-radius:var(--border-radius);padding:24px;box-shadow:var(--shadow-md);transition:var(--transition)}.card:hover{box-shadow:var(--shadow-lg);transform:translateY(-2px)}h1,h2,h3,h4,h5,h6{font-weight:700;line-height:1.2}h1{font-size:2.5rem}h2{font-size:2rem}h3{font-size:1.5rem}::selection{background:var(--primary-color);color:#fff}:focus-visible{outline:2px solid var(--primary-color);outline-offset:2px}input,textarea,select{font-family:inherit;font-size:1rem;padding:10px 16px;border:2px solid #e0e0e0;border-radius:12px;transition:var(--transition)}input:focus,textarea:focus,select:focus{border-color:var(--primary-color);box-shadow:0 0 0 3px #4caf501a}input:disabled,textarea:disabled,select:disabled{background:#f5f5f5;color:#999;cursor:not-allowed}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideInUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@keyframes slideInDown{0%{opacity:0;transform:translateY(-20px)}to{opacity:1;transform:translateY(0)}}@media (max-width: 768px){html{font-size:15px}.container{padding:12px}h1{font-size:2rem}h2{font-size:1.6rem}h3{font-size:1.25rem}.btn{padding:11px 18px;font-size:15px}.card{padding:18px}}@media (max-width: 480px){html{font-size:14px}.container{padding:10px}.btn{width:100%;min-height:44px;padding:12px 16px}}@media (prefers-color-scheme: dark){body{background:linear-gradient(135deg,#1a1a2e,#16213e);color:#e0e0e0}html,body{background-color:#121216}:root{--text-dark: #e0e0e0;--bg-light: #2d2d2d}.card{background:#2d2d2d;color:#e0e0e0}.card:hover{box-shadow:0 12px 40px #00000080}h1,h2,h3,h4,h5,h6{color:#e0e0e0}input,textarea,select{background:#3d3d3d;color:#e0e0e0;border-color:#4caf504d;caret-color:#66bb6a}input::placeholder,textarea::placeholder,select::placeholder{color:#999}input:focus,textarea:focus,select:focus{border-color:#4caf50;box-shadow:0 0 0 3px #4caf5033}input:disabled,textarea:disabled,select:disabled{background:#2d2d2d;color:#666}.btn.btn-outline{color:#66bb6a;border-color:#4caf50}.btn.btn-outline:hover{background:#4caf5026}::selection{background:#4caf50;color:#1e1e1e}}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}