* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: "Microsoft YaHei", sans-serif;
    background: linear-gradient(135deg, #f0f4ff, #e0e9ff);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.container {
    width: 100%;
    padding: 20px;
}

.card {
    max-width: 400px;
    margin: 0 auto;
    background: white;
    padding: 40px;
    border-radius: 16px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.08);
    text-align: center;
}

.logo {
    width: 60px;
    height: 60px;
    margin-bottom: 20px;
}

h1 {
    font-size: 26px;
    margin-bottom: 10px;
    color: #333;
}

p {
    color: #666;
    margin-bottom: 30px;
}

.btn {
    display: inline-block;
    padding: 12px 28px;
    background: #409EFF;
    color: white;
    text-decoration: none;
    border-radius: 8px;
    font-weight: bold;
}

.btn:hover {
    background: #308EFF;
}