:root{font-family:PingFang SC,Microsoft YaHei,sans-serif;color:#1f2937;background:#fff}*{box-sizing:border-box}body{margin:0;min-width:320px;color:#1f2937}a{color:inherit;text-decoration:none}.container{width:min(1200px,calc(100% - 32px));margin:0 auto}.section-title{font-size:28px;margin:0 0 20px}.card{background:#fff;border-radius:16px;box-shadow:0 16px 40px #0f172a0f}@media(max-width:768px){.container{width:min(100% - 24px,1200px)}}