#app{min-height:100vh}:root{--primary-color: #1890ff;--success-color: #52c41a;--warning-color: #faad14;--danger-color: #ff4d4f;--info-color: #1890ff;--bg-color: #f0f2f5;--bg-card: #ffffff;--text-primary: #303133;--text-regular: #606266;--text-secondary: #909399;--border-color: #dcdfe6;--sidebar-width: 220px;--header-height: 60px;--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .1), 0 2px 4px -1px rgba(0, 0, 0, .06);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .1), 0 4px 6px -2px rgba(0, 0, 0, .05);--radius-sm: 4px;--radius-md: 8px;--radius-lg: 12px}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;font-size:14px;color:var(--text-primary);background-color:var(--bg-color)}a{color:var(--primary-color);text-decoration:none}.card{background:var(--bg-card);border-radius:var(--radius-md);box-shadow:var(--shadow-sm);padding:20px}.flex{display:flex}.flex-center{display:flex;align-items:center;justify-content:center}.flex-between{display:flex;align-items:center;justify-content:space-between}.text-primary{color:var(--text-primary)}.text-regular{color:var(--text-regular)}.text-secondary{color:var(--text-secondary)}.mb-10{margin-bottom:10px}.mb-20{margin-bottom:20px}.mt-10{margin-top:10px}.mt-20{margin-top:20px}.portal-container{min-height:100vh;display:flex;flex-direction:column;background:#fff}.portal-header{position:fixed;top:0;left:0;right:0;height:64px;background:#fffffff2;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid #f0f0f0;z-index:100;display:flex;align-items:center;padding:0 40px}.portal-header .logo{font-size:22px;font-weight:700;color:#1890ff;display:flex;align-items:center;gap:8px}.portal-header .logo .logo-icon{width:32px;height:32px;background:linear-gradient(135deg,#1890ff,#096dd9);border-radius:8px;display:flex;align-items:center;justify-content:center;color:#fff;font-size:16px}.portal-header .nav-menu{flex:1;display:flex;justify-content:center;gap:40px}.portal-header .nav-menu a{color:#333;font-size:15px;transition:color .3s;position:relative}.portal-header .nav-menu a:hover,.portal-header .nav-menu a.active{color:#1890ff}.portal-header .nav-menu a.active:after{content:"";position:absolute;bottom:-22px;left:50%;transform:translate(-50%);width:24px;height:3px;background:#1890ff;border-radius:2px}.portal-header .header-actions{display:flex;align-items:center;gap:16px}.portal-header .header-actions .btn{padding:8px 20px;border-radius:6px;font-size:14px;cursor:pointer;transition:all .3s}.portal-header .header-actions .btn-login{color:#333;border:1px solid #d9d9d9;background:#fff}.portal-header .header-actions .btn-login:hover{color:#1890ff;border-color:#1890ff}.portal-header .header-actions .btn-register{color:#fff;background:linear-gradient(135deg,#1890ff,#096dd9);border:none}.portal-header .header-actions .btn-register:hover{opacity:.9;transform:translateY(-1px);box-shadow:0 4px 12px #1890ff4d}.portal-main{flex:1;padding-top:64px}.portal-footer{background:#1a1a2e;color:#ffffffb3;padding:60px 40px 20px}.portal-footer .footer-content{max-width:1200px;margin:0 auto 40px;display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px}.portal-footer .footer-content .footer-about .logo{font-size:22px;font-weight:700;color:#fff;margin-bottom:16px;display:flex;align-items:center;gap:8px}.portal-footer .footer-content .footer-about .logo .logo-icon{width:32px;height:32px;background:linear-gradient(135deg,#1890ff,#096dd9);border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:16px}.portal-footer .footer-content .footer-about .desc{font-size:14px;line-height:1.8;margin-bottom:16px}.portal-footer .footer-content .footer-about .contact{font-size:13px;line-height:2}.portal-footer .footer-content .footer-links h4{color:#fff;font-size:16px;margin-bottom:20px}.portal-footer .footer-content .footer-links ul{list-style:none}.portal-footer .footer-content .footer-links ul li{margin-bottom:12px}.portal-footer .footer-content .footer-links ul li a{color:#ffffffb3;font-size:14px;transition:color .3s}.portal-footer .footer-content .footer-links ul li a:hover{color:#1890ff}.portal-footer .footer-bottom{text-align:center;padding-top:20px;border-top:1px solid rgba(255,255,255,.1);font-size:13px}