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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-image: url('../images/bj.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-attachment: fixed;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.container {
    background: #ffffff;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    padding: 20px;
    max-width: 500px;
    width: 100%;
    animation: slideIn 0.5s ease-out;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

h1 {
    color: #333;
    text-align: center;
    font-size: 28px;
    font-weight: 600;
}

.notice {
    padding: 15px 18px;
    background: linear-gradient(135deg, #fff3cd 0%, #ffe69c 100%);
    border-left: 4px solid #ffc107;
    border-radius: 10px;
    margin-bottom: 25px;
    animation: slideIn 0.5s ease-out 0.2s both;
}

.notice-content {
    color: #856404;
    font-size: 14px;
    font-weight: 500;
}

.form-group {
    margin-bottom: 25px;
}

label {
    display: block;
    margin-bottom: 8px;
    color: #555;
    font-size: 14px;
    font-weight: 500;
}

input[type="text"] {
    width: 100%;
    padding: 14px 18px;
    border: 2px solid #e0e0e0;
    border-radius: 10px;
    font-size: 16px;
    transition: all 0.3s ease;
    outline: none;
}

input[type="text"]:focus {
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

input[type="text"]:read-only {
    background-color: #f5f5f5;
    cursor: not-allowed;
    color: #999;
}

input[type="text"]:read-only:focus {
    border-color: #e0e0e0;
    box-shadow: none;
}

.btn-container {
    margin-top: 30px;
}

.btn {
    width: 100%;
    padding: 14px;
    background: #ffc53d;
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.5);
}

.btn:active {
    transform: translateY(0);
}

.captcha-container {
    margin-top: 30px;
    padding: 25px;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    border-radius: 15px;
    text-align: center;
    display: none;
    animation: fadeIn 0.5s ease-out;
}

.captcha-container.show {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.captcha-label {
    font-size: 14px;
    color: #666;
    margin-bottom: 10px;
}

.captcha-code {
    font-size: 36px;
    font-weight: bold;
    color: #333;
    letter-spacing: 8px;
    font-family: 'Courier New', monospace;
    background: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    display: inline-block;
    min-width: 200px;
}

.warning {
    font-size: 12px;
    color: #f44336;
    margin-top: 5px;
}