/* 全局样式重置和基础设置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Microsoft YaHei', 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 顶部导航栏样式*/ 
.navbar {
    background-color: #fff;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}


/* 左侧LOGO样式
.logo-container {
    flex-shrink: 0;
}

.logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: #333;
    font-size: 1.5rem;
    font-weight: bold;
}

.logo i {
    color: #4D6BFE;
    margin-right: 10px;
    font-size: 1.8rem;
}

*/

/* 中间导航菜单样式 */
.main-nav {
    flex: 1;
    display: flex;
    justify-content: center;
    margin: 0 40px;
}

.nav-menu {
    display: flex;
    list-style: none;
}

.nav-item {
    margin: 0 15px;
    position: relative;
}

.nav-link {
    display: block;
    padding: 10px 15px;
    color: #333;
    text-decoration: none;
    font-size: 16px;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-link:hover {
	color: #4D6BFE;
}

/* 二级下拉菜单样式 */
.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background-color: #fff;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    border-radius: 4px;
    min-width: 180px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.3s ease;
    z-index: 1000;
}

.nav-item.dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-item {
    display: block;
    padding: 12px 20px;
    color: #333;
    text-decoration: none;
    font-size: 14px;
    transition: all 0.3s ease;
}

.dropdown-item:hover {
    background-color: #f8f9fa;
    color: #4D6BFE;
}

.dropdown-icon {
    margin-left: 5px;
    font-size: 12px;
    transition: transform 0.3s ease;
}

.nav-item.dropdown:hover .dropdown-icon {
    transform: rotate(180deg);
}

/* 右侧注册/登录按钮样式 */
.auth-container {
    display: flex;
    align-items: center;
    flex-shrink: 0;
}

.btn {
    display: inline-block;
    padding: 8px 20px;
    border-radius: 4px;
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
}

.btn-login {
    color: #333;
    background-color: transparent;
    margin-right: 10px;
}

.btn-login:hover {
    color: #4D6BFE;
}

.btn-register {
    color: #fff;
    background-color: #4D6BFE;
    border: 1px solid #4D6BFE;
}

.btn-register:hover {
    background-color: #4D6BFE;
    border-color: #4D6BFE;
}

/* 移动端菜单按钮（默认隐藏） 
.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    color: #333;
    cursor: pointer;
    padding: 5px;
}
*/

/* 移动端菜单（默认隐藏） 
.mobile-menu {
    position: fixed;
    top: 0;
    right: -300px;
    width: 300px;
    height: 100vh;
    background-color: #fff;
    box-shadow: -2px 0 10px rgba(0, 0, 0, 0.1);
    transition: right 0.3s ease;
    z-index: 1001;
}

.mobile-menu.active {
    right: 0;
}

.mobile-menu-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    border-bottom: 1px solid #eee;
}

.mobile-menu-header .logo {
    font-size: 1.2rem;
}

.close-menu-btn {
    background: none;
    border: none;
    font-size: 24px;
    color: #333;
    cursor: pointer;
}

.mobile-nav-menu {
    list-style: none;
    padding: 20px 0;
}

.mobile-nav-item {
    border-bottom: 1px solid #eee;
}

.mobile-nav-link {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
    color: #333;
    text-decoration: none;
    font-size: 16px;
}

.mobile-dropdown-menu {
    display: none;
    background-color: #f8f9fa;
}

.mobile-dropdown-menu.show {
    display: block;
}

.mobile-dropdown-item {
    display: block;
    padding: 12px 20px 12px 40px;
    color: #333;
    text-decoration: none;
    font-size: 14px;
    border-bottom: 1px solid #eee;
}

.mobile-dropdown-item:hover {
    background-color: #e9ecef;
    color: #4D6BFE;
}

.mobile-nav-item.auth-buttons {
    display: flex;
    padding: 15px 20px;
    border-bottom: none;
}

.mobile-nav-item.auth-buttons .btn {
    flex: 1;
    text-align: center;
}

*/

/* 响应式设计 */
@media (max-width: 992px) {
    .main-nav {
        margin: 0 20px;
    }
    
    .nav-item {
        margin: 0 10px;
    }
}

@media (max-width: 768px) {
    .main-nav,
    .auth-container .btn {
        display: none;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .hero-section h1 {
        font-size: 2.5rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 20px;
    }
}

@media (max-width: 576px) {
    .hero-section {
        padding: 60px 15px;
    }
    
    .hero-section h1 {
        font-size: 2rem;
    }
    
    .hero-section p {
        font-size: 1rem;
    }
}