:root {
    --primary-color: #0066ff;
    --primary-hover: #0052cc;
    --text-primary: #333;
    --text-secondary: #666;
    --text-muted: #999;
    --border-color: #e5e5e5;
    --bg-light: #f5f5f5;
    --bg-white: #fff;
    --border-radius: 4px;
    --transition: all 0.3s ease;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    font-size: 14px;
    line-height: 1.5;
    color: var(--text-primary);
    background-color: var(--bg-white);
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

button {
    font-family: inherit;
    cursor: pointer;
    transition: var(--transition);
}

/* 主导航栏 */
.main-nav {
    min-height: 65px;
    background-color: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-bottom: 1px solid rgba(229, 229, 229, 0.8);
    position: sticky;
    top: 0;
    z-index: 99;
}

.main-nav-container {
    width: 100%;
    min-height: 100%;
    display: flex;
    align-items: center;
    padding: 10px 20px;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 10px;
}

.nav-module {
    display: flex;
    align-items: center;
}

.logo-module {
    margin-left: 0;
    margin-right: 0;
    flex-shrink: 0;
}

.menu-module {
    flex: 1;
    justify-content: center;
    gap: 15px;
    margin-left: 0;
    flex-wrap: wrap;
}

.function-module {
    display: flex;
    align-items: center;
    gap: 15px;
    flex-shrink: 0;
    flex-wrap: wrap;
    justify-content: flex-end;
}

.mobile-module {
    display: none;
}

.logo {
    display: flex;
    align-items: center;
    margin-right: 0;
}

.logo img {
    width: 120px;
    height: auto;
    transition: var(--transition);
}

.logo img:hover {
    opacity: 0.9;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-right: 0;
    flex-wrap: wrap;
    justify-content: center;
}

.nav-item {
    position: relative;
}

.nav-item a {
    color: #000;
    font-size: 16px;
    font-weight: 400;
    display: flex;
    align-items: center;
    padding: 10px 0;
}

.nav-item a:hover {
    color: var(--primary-color);
}





.search-box {
    position: relative;
}

.search-input {
    width: 200px;
    max-width: 100%;
    height: 40px;
    padding: 0 16px;
    border: 1px solid var(--border-color);
    border-radius: 20px;
    font-size: 14px;
    outline: none;
    transition: var(--transition);
    background-color: var(--bg-white);
}

.search-input:focus {
    border-color: var(--primary-color);
    width: 220px;
    max-width: 100%;
    box-shadow: 0 0 0 2px rgba(0, 102, 255, 0.1);
}

.search-btn {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-muted);
    font-size: 14px;
    transition: var(--transition);
}

.search-btn:hover {
    color: var(--primary-color);
}

.login-btn {
    color: var(--text-primary);
    font-size: 16px;
    padding: 8px 12px;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.login-btn:hover {
    color: var(--primary-color);
    background-color: rgba(0, 102, 255, 0.05);
}

.doc-btn {
    color: var(--text-primary);
    font-size: 16px;
    padding: 8px 12px;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.doc-btn:hover {
    color: var(--primary-color);
    background-color: rgba(0, 102, 255, 0.05);
}

/* 语言切换按钮 */
.language-switcher {
    position: relative;
    margin: 0;
}

.language-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 16px;
    padding: 8px 12px;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
}

.language-btn::after {
    content: '⇅';
    font-size: 10px;
    margin-left: 5px;
    color: var(--text-muted);
}

.language-btn:hover {
    color: var(--primary-color);
    background-color: rgba(0, 102, 255, 0.05);
}

.language-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    background-color: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    z-index: 100;
    min-width: 200px;
    display: none;
    margin-top: 8px;
}

.language-dropdown.active {
    display: block;
}

.language-dropdown a {
    display: block;
    padding: 10px 16px;
    color: var(--text-primary);
    font-size: 14px;
    transition: var(--transition);
}

.language-dropdown a:hover {
    color: var(--primary-color);
    background-color: var(--bg-light);
}

.console-btn {
    display: inline-block;
    padding: 0 20px;
    height: 40px;
    line-height: 40px;
    background-color: var(--primary-color);
    color: var(--bg-white);
    border: none;
    border-radius: var(--border-radius);
    font-size: 16px;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 2px 4px rgba(0, 102, 255, 0.15);
}

.console-btn:hover {
    background-color: var(--primary-hover);
    box-shadow: 0 4px 8px rgba(0, 102, 255, 0.25);
    transform: translateY(-1px);
}

.register-btn {
    display: inline-block;
    padding: 0 20px;
    height: 40px;
    line-height: 40px;
    background-color: #fff;
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
    border-radius: var(--border-radius);
    font-size: 16px;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition);
}

.register-btn:hover {
    background-color: rgba(0, 102, 255, 0.05);
    border-color: var(--primary-hover);
    transform: translateY(-1px);
}

/* 移动端菜单按钮 */
.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 20px;
    color: var(--text-primary);
    cursor: pointer;
    padding: 8px;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.mobile-menu-btn:hover {
    background-color: var(--bg-light);
    color: var(--primary-color);
}

/* 轮播图 */
.carousel-container {
    width: 100%;
    overflow: hidden;
    background-color: #f0f7ff;
    margin-top: 0;
}

.carousel {
    position: relative;
    width: 100%;
    height: 470px;
}

.carousel-item {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 100px;
    opacity: 0;
    transition: opacity 0.5s ease;
}

.carousel-item.active {
    opacity: 1;
}

.carousel-content {
    flex: 1;
    max-width: 600px;
    padding-right: 50px;
}

.carousel-content h2 {
    font-size: 36px;
    font-weight: 600;
    color: #0066ff;
    margin-bottom: 20px;
}

.carousel-price {
    font-size: 20px;
    font-weight: 500;
    color: #ff6600;
    margin-bottom: 15px;
}

.carousel-desc {
    font-size: 16px;
    color: #666;
    line-height: 1.5;
}

.carousel-image {
    flex: 1;
    max-width: 500px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.carousel-image img {
    width: 100%;
    height: auto;
    max-height: 300px;
}

/* 轮播图指示器 */
.carousel-indicators {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
}

.indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: #ccc;
    border: none;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.indicator.active {
    background-color: #0066ff;
}

/* 轮播图切换按钮 */
.carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.8);
    border: 1px solid #ddd;
    font-size: 20px;
    font-weight: bold;
    color: #333;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.carousel-btn:hover {
    background-color: #fff;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.carousel-btn.prev {
    left: 30px;
}

.carousel-btn.next {
    right: 30px;
}



/* 移动端菜单 */
.mobile-menu {
    display: none;
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    background-color: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-bottom: 1px solid rgba(229, 229, 229, 0.8);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    z-index: 98;
    padding: 16px 20px;
}

.mobile-menu.active {
    display: block;
    animation: slideDown 0.3s ease;
}

.mobile-menu-items {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.mobile-menu-item a {
    color: var(--text-primary);
    font-size: 14px;
    font-weight: 500;
    padding: 8px 0;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.mobile-menu-item a:hover {
    color: var(--primary-color);
}

.mobile-search {
    margin-top: 16px;
}

.mobile-search-input {
    width: 100%;
    height: 40px;
    padding: 0 16px;
    border: 1px solid var(--border-color);
    border-radius: 20px;
    font-size: 14px;
    outline: none;
    transition: var(--transition);
}

.mobile-search-input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(0, 102, 255, 0.1);
}

/* 动画 */
@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .nav-menu {
        gap: 12px;
    }
    
    .function-module {
        gap: 12px;
    }
    
    .search-input {
        width: 180px;
    }
    
    .search-input:focus {
        width: 200px;
    }
    
    .nav-item a {
        font-size: 14px;
    }
    
    .login-btn,
    .doc-btn,
    .console-btn,
    .register-btn {
        font-size: 14px;
    }
}

@media (max-width: 992px) {
    .main-nav-container {
        padding: 10px 15px;
    }
    
    .nav-menu {
        gap: 10px;
    }
    
    .function-module {
        gap: 10px;
    }
    
    .search-input {
        width: 160px;
    }
    
    .search-input:focus {
        width: 180px;
    }
    
    .console-btn {
        padding: 0 16px;
    }
    
    .register-btn {
        padding: 0 16px;
    }
}

@media (max-width: 768px) {
    .main-nav {
        top: 0;
    }
    
    .menu-module {
        display: none;
    }
    
    .function-module {
        display: none;
    }
    
    .mobile-module {
        display: block;
    }
    
    .mobile-menu-btn {
        display: block;
    }
}

@media (max-width: 480px) {
    .main-nav-container {
        padding: 10px 12px;
    }
    
    .logo {
        width: 100px;
    }
    
    .logo div {
        width: 100%;
        font-size: 14px;
    }
}