body {
    background: #181A20;
    color: #EAECEF;
    font-family: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', Arial, sans-serif;
    margin: 0;
    min-height: 100vh;
}
.header {
    height: 60px;
    background: #181A20;
    display: flex;
    align-items: center;
    padding: 0 32px;
    border-bottom: 1px solid #23262F;
}
.header-logo {
    color: #F0B90B;
    font-size: 1.5rem;
    font-weight: bold;
    letter-spacing: 2px;
}
.container {
    max-width: 360px;
    margin: 60px auto 0 auto;
    background: #23262F;
    border-radius: 16px;
    box-shadow: 0 4px 32px #0004;
    padding: 36px 30px 32px 30px;
}
.container h2 {
    color: #F0B90B;
    font-size: 2.2rem;
    font-weight: 800;
    margin: 0 0 16px 0;
    letter-spacing: 2px;
    text-align: center;
}
.input-group {
    margin-bottom: 20px;
}
.input-group label {
    display: block;
    color: #EAECEF;
    margin-bottom: 8px;
    font-size: 1rem;
}
.input-group input {
    width: 100%;
    padding: 12px 14px;
    border: none;
    border-radius: 8px;
    background: #181A20;
    color: #EAECEF;
    font-size: 1.05rem;
    outline: none;
    margin-bottom: 2px;
    box-sizing: border-box;
}
.input-group input:focus {
    border: 1px solid #F0B90B;
    background: #23262F;
}
.login-btn {
    width: 100%;
    background: #F0B90B;
    color: #181A20;
    border: none;
    border-radius: 8px;
    padding: 14px 0;
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    margin-top: 4px;
    margin-bottom: 10px;
    transition: background .2s;
}
.login-btn:hover {
    background: #ffcc41;
}
.bottom-link {
    text-align: right;
    margin-top: 8px;
}
.bottom-link a {
    color: #F0B90B;
    text-decoration: none;
    font-size: .97rem;
}
.bottom-link a:hover {
    text-decoration: underline;
}
.msg-list {
    margin: 12px 0 0 0;
    padding: 0;
    list-style: none;
    color: #ff7474;
    font-size: .97rem;
}