body {
    background: linear-gradient(135deg,#f7fafc 0%,#e9f7ef 100%);
    min-height: 100vh;
    font-family: "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
}
.login-container {
    width: 100%;
    max-width: 370px;
    margin: 60px auto;
    background: #fff;
    border-radius: 18px;
    box-shadow: 0 8px 28px rgba(7,193,96,0.08), 0 1.5px 12px #e9e9e9;
    padding: 36px 32px 28px;
    box-sizing: border-box;
    position: relative;
    animation: popIn .8s cubic-bezier(.39,.58,.57,1.25);
}
@keyframes popIn {
    from { transform: scale(.95) translateY(30px); opacity: 0; }
    to { transform: scale(1) translateY(0); opacity: 1; }
}
.login-container h2 {
    text-align: center;
    font-size: 1.5rem;
    color: #222;
    font-weight: 500;
    margin-bottom: 28px;
    letter-spacing: 2px;
}
.input-row {
    margin-bottom: 20px;
}
.input-row label {
    font-size: 14px;
    color: #333;
    margin-bottom: 7px;
    display: block;
    font-weight: 400;
    letter-spacing: 1px;
}
.input-row input[type="text"],
.input-row input[type="password"] {
    width: 100%;
    padding: 12px 13px;
    font-size: 15px;
    border-radius: 8px;
    border: 1.3px solid #e0e6ed;
    background: #f8fafd;
    transition: border .2s;
    outline: none;
    box-sizing: border-box;
}
.input-row input:focus {
    border: 1.3px solid #07c160;
    background: #f6fff9;
}
.login-btn {
    width: 100%;
    background: linear-gradient(90deg,#20db72 0%,#07c160 100%);
    color: #fff;
    border: none;
    border-radius: 8px;
    padding: 14px 0;
    font-size: 1.1rem;
    letter-spacing: 2px;
    cursor: pointer;
    margin-top: 7px;
    font-weight: 500;
    box-shadow: 0 3px 18px rgba(7,193,96,0.11);
    transition: background .2s;
}
.login-btn:active {
    background: linear-gradient(90deg,#1a9c59 0%,#0ca251 100%);
}
.err-tip {
    text-align: center;
    color: #e74c3c;
    margin-bottom: 16px;
    font-size: 15px;
    min-height: 20px;
}
.goto {
    text-align: right;
    margin-top: 24px;
    font-size: 14px;
    color: #888;
}
.goto a {
    color: #07c160;
    text-decoration: none;
    font-weight: 500;
}
@media (max-width:480px) {
    .login-container { 
        box-shadow: none; 
        border-radius: 0;
        margin: 0;
        min-height: 100vh;
        padding-top: 48px;
        width: 100%;
        max-width: none;
    }
}