/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 头部样式 */
.header {
    background-color: #fff;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo img {
    height: 50px;
}

.nav {
    display: flex;
    gap: 20px;
}

.nav-link {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    padding: 8px 16px;
    border-radius: 4px;
    transition: all 0.3s ease;
}

.nav-link:hover, .nav-link.active {
    background-color: #f0f0f0;
    color: #007bff;
}

/* 主要内容区域 */
.main {
    margin-top: 100px;
    padding: 40px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 30px;
    color: #2c3e50;
    font-size: 2em;
}

/* 报名须知样式 */
.notice-section {
    background-color: #fff;
    border-radius: 8px;
    padding: 30px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.notice-content {
    margin-bottom: 30px;
}

.notice-content p {
    margin-bottom: 15px;
}

/* 按钮样式 */
.button-container {
    text-align: center;
    margin-top: 30px;
}

.register-button, .submit-button {
    display: inline-block;
    padding: 12px 30px;
    background-color: #007bff;
    color: #fff;
    text-decoration: none;
    border-radius: 4px;
    border: none;
    font-size: 1.1em;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.register-button:hover, .submit-button:hover {
    background-color: #0056b3;
}

/* 表单样式 */
.register-section {
    background-color: #fff;
    border-radius: 8px;
    padding: 30px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    max-width: 600px;
    margin: 0 auto;
}

.register-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-weight: 500;
    color: #2c3e50;
}

.form-group input {
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 1em;
}

.captcha-group .captcha-container {
    display: flex;
    gap: 10px;
}

.captcha-group input {
    flex: 1;
}

.captcha-group img {
    height: 42px;
    border: 1px solid #ddd;
    border-radius: 4px;
    cursor: pointer;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .header .container {
        height: 60px;
    }
    
    .logo img {
        height: 40px;
    }
    
    .nav-link {
        padding: 6px 12px;
        font-size: 0.9em;
    }
    
    .main {
        margin-top: 80px;
        padding: 20px 0;
    }
    
    .section-title {
        font-size: 1.5em;
    }
    
    .register-section {
        padding: 20px;
    }
}