*,:after,:before{box-sizing:border-box;margin:0;padding:0}:root{--color-primary:#2b5aed;--color-primary-dark:#1e43b8;--color-primary-light:#e8eeff;--color-accent:#f0a030;--color-text:#1a1a2e;--color-text-secondary:#666;--color-text-light:#999;--color-bg:#fff;--color-bg-alt:#f7f8fc;--color-border:#e8e8e8;--font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;--max-width:1200px;--header-height:64px;--section-padding:80px 0;--transition:all .3s ease}html{font-size:16px;scroll-behavior:smooth}body{background-color:var(--color-bg);color:var(--color-text);font-family:var(--font-family);line-height:1.6;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{color:inherit;text-decoration:none;transition:var(--transition)}ol,ul{list-style:none}img{display:block;max-width:100%}button{cursor:pointer}button,input{border:none;font-family:var(--font-family);outline:none}.container{margin:0 auto;max-width:var(--max-width);padding:0 20px}.section-title{margin-bottom:50px;text-align:center}.section-title h2{color:var(--color-text);display:inline-block;font-size:32px;font-weight:700;position:relative}.section-title h2 .quote{color:var(--color-primary);font-size:40px;font-style:italic;font-weight:900;margin-right:4px}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:#f1f1f1}::-webkit-scrollbar-thumb{background:#c1c1c1;border-radius:3px}::-webkit-scrollbar-thumb:hover{background:#a1a1a1}