:root{--primary-color: #007bff;--primary-hover: #0056b3;--bg-color: #f8f9fa;--card-bg: #ffffff;--text-main: #333333;--text-muted: #666666;--border-color: #eeeeee;--shadow: 0 4px 12px rgba(0, 0, 0, .08);--radius: 12px}*{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;-webkit-text-size-adjust:100%}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;line-height:1.6;color:var(--text-main);background-color:var(--bg-color);word-break:keep-all}ul{list-style:none}a{text-decoration:none;color:inherit}button{cursor:pointer;font-family:inherit}input,textarea,select{font-family:inherit;font-size:1rem}.container{width:100%;max-width:800px;margin:0 auto;padding:20px}@media(max-width:600px){.container{padding:15px}}