.portal-auth-body{background:linear-gradient(135deg,#667eea,#764ba2);min-height:100vh;font-family:Inter,Noto Sans SC,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif}.portal-login-wrapper{display:flex;flex-direction:column;align-items:center;gap:1rem;width:100%}.portal-logo{width:200px;height:auto;filter:drop-shadow(0 4px 6px rgba(0,0,0,.15))}.portal-login-card{-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:#fffffff2;box-shadow:0 25px 50px -12px #00000040;border-radius:1rem;padding:1.5rem;width:100%;max-width:24rem}.portal-login-card h1{color:#3b82f6;font-size:1.5rem;font-weight:700;text-align:center;margin-bottom:1.5rem}.portal-input-group{position:relative;margin-bottom:1rem}.portal-input-group input{width:100%;padding:.75rem;background-color:#f9fafb;border:1px solid #e5e7eb;border-radius:.5rem;outline:none;transition:border-color .2s ease}.portal-input-group input:focus{border-color:#3b82f6}.portal-input-group label{display:block;font-size:.875rem;color:#374151;margin-bottom:.375rem}.portal-captcha-row{display:flex;gap:.75rem;align-items:stretch}.portal-captcha-row .portal-input-group{flex:1;margin-bottom:0}.portal-captcha-image{width:144px;min-height:48px;background:linear-gradient(135deg,#eef2ff,#e0f2fe);border:1px solid rgba(59,130,246,.35);border-radius:.5rem;cursor:pointer;overflow:hidden;display:flex;align-items:center;justify-content:center}.portal-captcha-image img{width:100%;height:100%;object-fit:cover}.portal-captcha-image.loading:before{content:"";width:24px;height:24px;border-radius:9999px;border:2px solid rgba(59,130,246,.35);border-top-color:#2563ebe6;animation:portalCaptchaSpin .8s linear infinite}@keyframes portalCaptchaSpin{to{transform:rotate(360deg)}}.portal-btn-primary{background:linear-gradient(135deg,#3b82f6,#1e40af);transition:all .3s ease;width:100%;padding:.625rem;color:#fff;font-weight:500;border-radius:.5rem;border:none;cursor:pointer}.portal-btn-primary:hover{transform:translateY(-2px);box-shadow:0 10px 25px #3b82f666}.portal-error-text{color:#ef4444;font-size:.875rem;margin-top:.375rem}.portal-form-space>*+*{margin-top:1rem}.portal-footer{margin-top:1.5rem;padding-top:1rem;border-top:1px solid #e5e7eb;text-align:center}.portal-footer p,.portal-footer a{color:#6b7280;font-size:.75rem;margin:.125rem 0}@media(max-width:640px){.portal-logo{width:150px}}