* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Roboto, 'Helvetica Neue', 'Microsoft YaHei', sans-serif;
}

body {
    background-color: #FFFFFF;
    color: #333333;
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 30px;
}

.header {
    background-color: #0F52BA;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header .container {
    display: flex;
    justify-content: center; /* 改为居中对齐 */
    align-items: center;
    flex-wrap: nowrap;
    padding: 12px 30px;
    gap: 15px;
}

.product-manual {
    position: relative;
    margin-left: 30px; /* 增加左侧间距 */
    flex-shrink: 0;
}

.manual-btn {
    background-color: #FF6B00;
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: 20px;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 600;
    transition: background-color 0.2s;
}

.manual-btn:hover {
    background-color: #E55A00;
}

.manual-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    padding: 10px 0;
    margin-top: 5px;
    min-width: 200px;
    z-index: 1000;
    display: none;
}

.manual-dropdown.show {
    display: block;
}

.manual-dropdown a {
    display: block;
    padding: 10px 20px;
    color: #333;
    text-decoration: none;
    transition: background-color 0.2s;
}

.manual-dropdown a:hover {
    background-color: #f5f5f5;
}

.logo {
    cursor: pointer;
    margin-right: 30px; /* 给logo右侧添加间距 */
}

.logo h1 {
    font-size: 1.9rem;
    font-weight: 600;
    color: white;
    letter-spacing: 0.5px;
    white-space: nowrap; /* 防止文字换行 */
}

.logo p {
    font-size: 0.9rem;
    color: rgba(255,255,255,0.85);
    margin-top: 4px;
}

.nav {
    display: flex;
    justify-content: center;
}

.nav ul {
    display: flex;
    list-style: none;
    gap: 20px;
    flex-shrink: 1;
}

.nav ul li a {
    color: white;
    text-decoration: none;
    font-size: 1.15rem;
    font-weight: 500;
    padding: 6px 0;
    border-bottom: 3px solid transparent;
    transition: 0.2s;
    white-space: nowrap; /* 防止文字换行 */
}

.nav ul li a:hover {
    border-bottom-color: white;
}

/* 移动端菜单按钮 */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 24px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 101;
}

.mobile-menu-btn span {
    display: block;
    width: 100%;
    height: 3px;
    background-color: white;
    border-radius: 2px;
    transition: all 0.3s ease;
}

/* PWA安装按钮 */
.pwa-install {
    margin-left: 15px;
}

.install-btn {
    background-color: #FF6B00;
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.9rem;
    cursor: pointer;
    font-weight: 600;
    transition: background-color 0.2s;
}

.install-btn:hover {
    background-color: #E55A00;
}



.main {
    flex: 1;
    padding: 40px 0 60px;
}

/* 面包屑导航 */
.breadcrumb {
    font-size: 0.9rem;
    color: #666;
    margin: 20px 0;
    padding: 10px 0;
    border-bottom: 1px solid #eaeef2;
}

.breadcrumb a {
    color: #0F52BA;
    text-decoration: none;
    margin: 0 5px;
}

.breadcrumb a:hover {
    text-decoration: underline;
}

.section-title {
    font-size: 2.2rem;
    color: #0F52BA;
    margin: 40px 0 20px;
    border-left: 6px solid #0F52BA;
    padding-left: 20px;
    font-weight: 600;
}

.grid-2 { display: grid; grid-template-columns: repeat(2,1fr); gap: 30px; }
.grid-3 { display: grid; grid-template-columns: repeat(3,1fr); gap: 30px; }
.grid-4 { display: grid; grid-template-columns: repeat(4,1fr); gap: 30px; }

.card {
    background: #FFFFFF;
    border: 1px solid #eaeef2;
    border-radius: 10px;
    padding: 24px;
    box-shadow: 0 5px 15px rgba(0,20,50,0.03);
}

.btn {
    display: inline-block;
    background-color: #0F52BA;
    color: white;
    padding: 10px 28px;
    border-radius: 40px;
    text-decoration: none;
    font-weight: 600;
    border: none;
    cursor: pointer;
    font-size: 1rem;
    transition: 0.2s;
}

.btn:hover {
    background-color: #0b3e8a;
}

.btn-danger {
    background-color: #dc3545;
}

.btn-danger:hover {
    background-color: #c82333;
}

.btn-success {
    background-color: #28a745;
}

.btn-success:hover {
    background-color: #218838;
}

.footer {
    background-color: #0F52BA;
    color: rgba(255,255,255,0.9);
    padding: 30px 0 20px;
    margin-top: 20px;
    border-top: 4px solid #0b3e8a;
}

.footer .container {
    text-align: center;
}

.footer .icp {
    margin-top: 15px;
    font-size: 0.95rem;
    color: rgba(255,255,255,0.7);
}

.footer .icp span {
    background: rgba(255,255,255,0.1);
    padding: 4px 12px;
    border-radius: 30px;
    display: inline-block;
}

/* 文章列表样式 */
.article-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.article-card {
    background: #FFFFFF;
    border: 1px solid #eaeef2;
    border-radius: 10px;
    padding: 20px;
    box-shadow: 0 5px 15px rgba(0,20,50,0.03);
}

.article-title {
    font-size: 2.2rem;
    color: #0F52BA;
    margin-bottom: 20px;
    font-weight: 700;
    text-align: center;
    padding-bottom: 15px;
    border-bottom: 3px solid #0F52BA;
}

.article-meta {
    font-size: 0.9rem;
    color: #666;
    margin-bottom: 15px;
}

.article-content {
    font-size: 1.1rem;
    line-height: 1.8;
    color: #333;
    text-indent: 2em;
}

.article-content p {
    margin-bottom: 20px;
}

.back-link {
    display: inline-block;
    margin-top: 30px;
    color: #0F52BA;
    text-decoration: none;
    font-weight: 500;
    padding: 10px 20px;
    border: 1px solid #0F52BA;
    border-radius: 5px;
    transition: all 0.2s;
}

.back-link:hover {
    background-color: #0F52BA;
    color: white;
}

/* 表单样式 */
.form-group {
    margin-bottom: 15px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
}

.form-group input, .form-group textarea, .form-group select {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 1rem;
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

/* 后台管理样式 */
.sidebar {
    width: 250px;
    background-color: #0F52BA;
    color: white;
    padding: 20px;
    position: fixed;
    height: 100vh;
}

.main-content {
    margin-left: 250px;
    flex: 1;
    padding: 20px;
}

.table-container {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th, td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid #ddd;
}

th {
    background-color: #f8f9fa;
    font-weight: 600;
}

/* 模态框样式 */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.5);
    z-index: 1000;
}

.modal-content {
    background-color: white;
    margin: 5% auto;
    padding: 20px;
    border-radius: 10px;
    width: 90%;
    max-width: 500px;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.close {
    font-size: 24px;
    cursor: pointer;
    color: #aaa;
}

.close:hover {
    color: #333;
}

/* 消息提示样式 */
.message {
    padding: 15px;
    border-radius: 5px;
    margin-bottom: 20px;
    display: none;
}

.message.success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
    display: block;
}

.message.error {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
    display: block;
}

/* 状态标签样式 */
.status {
    padding: 4px 8px;
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: 500;
}

.status.top {
    background-color: #d4edda;
    color: #155724;
}

.status.normal {
    background-color: #e9ecef;
    color: #495057;
}

/* 关于我们页面样式 */
.process-steps {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    margin: 30px 0;
}

.step {
    flex: 1;
    min-width: 200px;
    background: #f5f9ff;
    padding: 20px;
    border-radius: 10px;
    border-left: 4px solid #0F52BA;
}

.strength-img-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
    margin-top: 20px;
}

.strength-img {
    width: 100%;
    height: auto;
    border-radius: 8px;
    object-fit: cover;
}

.about-img {
    width: 100%;
    height: auto;
    border-radius: 8px;
    margin-top: 20px;
}

.strength-list {
    list-style: none;
    padding: 0;
    margin: 20px 0;
}

.strength-list li {
    padding: 10px 0;
    border-bottom: 1px solid #e0e0e0;
    position: relative;
    padding-left: 25px;
}

.strength-list li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #0F52BA;
    font-weight: bold;
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .container {
        max-width: 100%;
        padding: 0 20px;
    }
}

@media (max-width: 800px) {
    .header .container { 
        flex-direction: row; 
        text-align: left;
        padding: 10px 15px;
        position: relative;
        flex-wrap: wrap;
    }
    
    /* 隐藏移动端菜单按钮 */
    .mobile-menu-btn {
        display: none;
    }
    
    /* 导航栏始终显示 - 横向滚动 */
    .nav {
        display: block;
        width: 100%;
        order: 3;
        margin-top: 10px;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
    
    .nav ul { 
        flex-direction: row;
        flex-wrap: nowrap;
        margin-top: 0;
        gap: 0;
        padding: 0;
        min-width: max-content;
    }
    
    .nav ul li {
        flex-shrink: 0;
    }
    
    .nav ul li a {
        display: block;
        padding: 8px 12px;
        font-size: 0.9rem;
        white-space: nowrap;
    }
    
    /* 产品手册按钮调整 */
    .product-manual {
        display: none;
    }
    
    /* PWA安装按钮 - 移动端显示 */
    .pwa-install {
        display: block;
        order: 4;
        margin-left: 10px;
    }
    
    .install-btn {
        background-color: #FF6B00;
        color: white;
        border: none;
        padding: 6px 12px;
        border-radius: 15px;
        font-size: 0.8rem;
        cursor: pointer;
        white-space: nowrap;
    }
    
    .install-btn:hover {
        background-color: #E55A00;
    }
    
    /* 桌面快捷方式按钮调整 */
    .desktop-shortcut {
        display: none;
    }
    
    .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
    .ai-assistant-nav {
        margin-right: 0;
        margin-top: 10px;
    }
    .ai-nav-btn {
        font-size: 0.8rem;
        padding: 4px 8px;
    }
    .process-steps {
        flex-direction: column;
    }
    .step {
        min-width: 100%;
    }
    .strength-img-grid {
        grid-template-columns: 1fr;
    }
    
    /* Logo文字缩小 */
    .logo h1 {
        font-size: 1.2rem;
    }
    
    .logo p {
        font-size: 0.75rem;
    }
}

@media (max-width: 768px) {
    .sidebar {
        width: 100%;
        position: static;
    }
    .main-content {
        margin-left: 0;
        padding: 15px;
    }
    
    /* 通用容器调整 */
    .container {
        padding: 0 15px;
    }
    
    /* 卡片和网格优化 */
    .card, .box {
        padding: 15px;
    }
    
    /* 表格滚动 */
    table {
        display: block;
        overflow-x: auto;
        white-space: nowrap;
    }
    
    /* 按钮大小调整 */
    button, .btn {
        padding: 10px 15px;
        font-size: 0.9rem;
    }
    
    /* 输入框优化 */
    input, select, textarea {
        font-size: 16px; /* 防止iOS自动缩放 */
    }
}

/* 点击效果样式 */
.clickable {
    cursor: pointer;
    transition: all 0.3s ease;
}

.clickable:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.article-item {
    padding: 15px;
    background-color: #f5f9ff;
    border-radius: 8px;
    border-left: 4px solid #0F52BA;
    transition: all 0.3s ease;
}

.article-item:hover {
    background-color: #e6f0ff;
    transform: translateX(5px);
}