.common_div{display:flex}.left-nav{width:280px;background-color:#ededed;min-height:550px;border-radius:9px 0 0 9px}.logo-area{background:url(img/logo_2.png) no-repeat center center;width:70px;height:70px;margin:40px auto 30px;line-height:500px;overflow:hidden;border-radius:9px}.nav-menu ul{list-style:none}.nav-menu li{display:block;width:100%}.nav-menu a{display:block;width:100%;padding:14px 20px;text-decoration:none;font-size:17px;font-weight:500;color:#333;transition:all 0.2s ease;border-left:5px solid transparent;box-sizing:border-box}.nav-menu a:hover{background-color:#ffffff73;color:#c62858;border-left-color:#c6285873;animation:paddingPulse 0.4s ease forwards}.nav-menu a.active{background-color:#ffffff;color:#c62858;border-left-color:#c62858;font-weight:600}@keyframes paddingPulse{0%{padding-left:20px}50%{padding-left:24px}100%{padding-left:20px}}.right-content{flex:1;width:940px;background-color:#ffffff;min-height:550px;padding:60px 44px 48px 44px;box-sizing:border-box;border-radius:0 10px 10px 0}.page-header{margin-bottom:28px}.page-header h1{font-size:30px;font-weight:600}.breadcrumb{font-size:16px;color:#b49173;margin-top:8px}.about-section h2{font-size:22px;margin:1.2em 0 0.6em 0;color:#5c3e2e;font-weight:500}.about-section h2:first-of-type{margin-top:0}.about-section p{margin:0 0 0.6em;line-height:1.75;color:#3e2c24;font-size:16px}.feature-list{background:#f6f6f6;padding:14px 24px;border-radius:7px;list-style:none;margin:18px 0 22px 0}.feature-list li{margin:10px 0;font-size:16px;color:#4d3523}