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

body {
    font-family: 'Microsoft YaHei', 'Segoe UI', Roboto, Arial, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 40px 20px;
}

.install-container {
    max-width: 800px;
    margin: 0 auto;
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.2);
    overflow: hidden;
}

.header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    text-align: center;
    padding: 30px;
}

.header h1 {
    font-size: 28px;
    margin-bottom: 8px;
}

.header p {
    opacity: 0.9;
    font-size: 14px;
}

.steps {
    display: flex;
    background: #f5f5f5;
    border-bottom: 1px solid #e0e0e0;
}

.step {
    flex: 1;
    text-align: center;
    padding: 15px;
    color: #999;
    position: relative;
    font-size: 14px;
}

.step.active {
    color: #667eea;
    background: #fff;
    font-weight: bold;
}

.step.done {
    color: #52c41a;
}

.step:not(:last-child):after {
    content: '';
    position: absolute;
    right: -5px;
    top: 50%;
    transform: translateY(-50%);
    width: 10px;
    height: 10px;
    border-right: 2px solid #ddd;
    border-top: 2px solid #ddd;
    transform: rotate(45deg);
}

.content {
    padding: 30px;
}

.content h2 {
    margin-bottom: 20px;
    color: #333;
    font-size: 20px;
    border-left: 4px solid #667eea;
    padding-left: 15px;
}

.check-table, .info-table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 20px;
}

.check-table th, .check-table td,
.info-table th, .info-table td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid #eee;
}

.check-table th {
    background: #f9f9f9;
    font-weight: 600;
}

.check-table td.ok {
    color: #52c41a;
    font-weight: bold;
}

.check-table td.error {
    color: #ff4d4f;
    font-weight: bold;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #333;
}

.form-group input, .form-group select {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-size: 14px;
    transition: border 0.3s;
}

.form-group input:focus {
    outline: none;
    border-color: #667eea;
}

.form-group .hint {
    display: block;
    font-size: 12px;
    color: #999;
    margin-top: 5px;
}

hr {
    margin: 20px 0;
    border: none;
    border-top: 1px solid #eee;
}

.actions {
    display: flex;
    justify-content: space-between;
    margin-top: 30px;
}

.btn {
    display: inline-block;
    padding: 10px 24px;
    background: #f5f5f5;
    color: #666;
    text-decoration: none;
    border-radius: 8px;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
    font-size: 14px;
}

.btn-primary {
    background: #667eea;
    color: #fff;
}

.btn-primary:hover {
    background: #5a67d8;
}

.btn:hover {
    opacity: 0.9;
}

.pass-msg, .success-msg {
    background: #f6ffed;
    border: 1px solid #b7eb8f;
    color: #52c41a;
    padding: 15px;
    border-radius: 8px;
    text-align: center;
    margin: 20px 0;
}

.error-msg {
    background: #fff2f0;
    border: 1px solid #ffccc7;
    color: #ff4d4f;
    padding: 15px;
    border-radius: 8px;
    margin: 20px 0;
}

.info-msg {
    background: #e6f7ff;
    border: 1px solid #91d5ff;
    color: #1890ff;
    padding: 15px;
    border-radius: 8px;
    margin: 20px 0;
}

.info-box {
    background: #f9f9f9;
    padding: 20px;
    border-radius: 8px;
    margin: 20px 0;
}

.info-box p {
    margin: 8px 0;
}

.warning {
    background: #fff7e6;
    border: 1px solid #ffd591;
    color: #fa8c16;
    padding: 15px;
    border-radius: 8px;
    margin-top: 20px;
    text-align: center;
}

.footer {
    text-align: center;
    padding: 20px;
    background: #f5f5f5;
    color: #999;
    font-size: 12px;
}

.success-msg .icon {
    font-size: 48px;
    margin-bottom: 10px;
}