:root{--primary: #FF5722;--primary-light: #FF8A50;--secondary: #FFC107;--bg-color: #FFFFFF;--text-main: #1C1C1E;--text-secondary: #8E8E93;--border-color: #E5E5EA;--font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;--max-width: 980px;--radius: 12px;--shadow-sm: 0 1px 3px rgba(0,0,0,.1);--shadow-md: 0 4px 6px rgba(0,0,0,.1);--gradient-bg: linear-gradient(135deg, #FFF8F0 0%, #FFFFFF 100%)}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-family);background-color:var(--bg-color);color:var(--text-main);line-height:1.5;-webkit-font-smoothing:antialiased}a{text-decoration:none;color:inherit;transition:opacity .2s}a:hover{opacity:.8}.container{max-width:var(--max-width);margin:0 auto;padding:0 20px}h1,h2,h3{font-weight:700;letter-spacing:-.02em}.btn{display:inline-block;background-color:var(--primary);color:#fff;padding:10px 20px;border-radius:var(--radius);font-weight:600;transition:transform .1s,background-color .2s}.btn:hover{background-color:var(--primary-light);transform:scale(1.02)}.card{background:#fff;border:1px solid var(--border-color);border-radius:var(--radius);padding:24px;transition:box-shadow .2s,transform .2s}.card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}.section{padding:60px 0}.text-center{text-align:center}.text-secondary{color:var(--text-secondary)}.mb-2{margin-bottom:8px}.mb-4{margin-bottom:16px}.mt-4{margin-top:16px}.mt-8{margin-top:32px}