/* 基础样式 - 兼容IE4和Windows 98 SE */
body {
    font-family: "SimSun", "宋体", Arial, Helvetica, sans-serif;
    font-size: 12px;
    color: #000000;
    background-color: #FFFFFF;
    margin: 0;
    padding: 0;
    line-height: 1.5;
}

h1, h2, h3, h4, h5, h6 {
    font-family: "SimSun", "宋体", Arial, Helvetica, sans-serif;
    color: #000080;
    margin-top: 10px;
    margin-bottom: 10px;
}

h1 {
    font-size: 24px;
}

h2 {
    font-size: 18px;
    border-bottom: 2px solid #000080;
    padding-bottom: 5px;
}

a {
    color: #0000FF;
    text-decoration: underline;
}

a:hover {
    color: #FF0000;
    text-decoration: underline;
}

a:active {
    color: #800080;
}

ul {
    margin-top: 5px;
    margin-bottom: 10px;
    padding-left: 20px;
}

li {
    margin-bottom: 5px;
}

p {
    margin-top: 5px;
    margin-bottom: 10px;
    text-align: justify;
}

/* 表格样式 */
table {
    font-size: 12px;
    border-collapse: collapse;
}

th {
    background-color: #E0E0E0;
    color: #000000;
    font-weight: bold;
    text-align: left;
    padding: 5px;
    border: 1px solid #CCCCCC;
}

td {
    padding: 5px;
    border: 1px solid #CCCCCC;
}

tr:nth-child(even) {
    /* 注意：IE4不支持nth-child，但这不会导致错误，只是被忽略 */
    background-color: #FAFAFA;
}

/* 表单样式 */
input, select, textarea {
    font-family: "SimSun", "宋体", Arial, Helvetica, sans-serif;
    font-size: 12px;
    border: 1px solid #000000;
    padding: 2px;
}

input[type="submit"], input[type="button"] {
    background-color: #C0C0C0;
    border: 1px outset #808080;
    padding: 2px 5px;
    cursor: pointer;
}

/* 兼容性修复 */
/* 居中元素 */
.center {
    text-align: center;
}

/* 清除浮动 */
.clear {
    clear: both;
}

/* IE4特定修复 */
@media all {
    /* IE4不会读取这个块，其他浏览器会 */
    .modern-only {
        /* 仅现代浏览器使用的样式 */
    }
}

/* 确保链接在各种状态下都清晰可辨 */
a:link, a:visited, a:hover, a:active {
    font-weight: normal;
}

/* 下载按钮样式 */
.download-button {
    background-color: #008000;
    color: white;
    padding: 5px 10px;
    text-decoration: none;
    display: inline-block;
    border: 1px outset #006000;
}

.download-button:hover {
    background-color: #00A000;
    color: white;
    border: 1px inset #006000;
}

/* 四线下载按钮容器 */
.download-buttons-container {
    margin: 10px 0;
    text-align: center;
    /* 默认两列布局 */
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
}

/* 下载按钮容器 - 完全兼容IE5 */
.download-buttons-container {
    margin: 10px 0;
    text-align: center;
    /* IE5兼容：清除浮动 */
    clear: both;
}

/* 四线下载按钮容器 - 完全兼容IE5 */
.download-buttons-container:after {
    content: ".";
    display: block;
    height: 0;
    clear: both;
    visibility: hidden;
}

/* 返回首页按钮样式 - 完全兼容IE5 */
.back-link {
    background-color: #000080;
    color: #FFFFFF;
    padding: 6px 12px;
    text-decoration: none;
    border: 2px outset #FFFFFF;
    font-family: "SimSun", "宋体", Arial, Helvetica, sans-serif;
    font-size: 12px;
    font-weight: bold;
    cursor: pointer;
    text-align: center;
    /* IE5兼容：使用inline-block的替代方案 */
    display: inline;
}

.back-link:hover {
    background-color: #0000A0;
    border: 2px inset #808080;
}

.back-link:active {
    background-color: #000060;
    border: 2px inset #808080;
}

/* 四线下载按钮样式 - Windows 98风格 - 完全兼容IE5 */
.download-line-button {
    background-color: #008000;
    color: #FFFFFF;
    padding: 6px 12px;
    text-decoration: none;
    margin: 4px;
    border: 2px outset #FFFFFF;
    font-family: "SimSun", "宋体", Arial, Helvetica, sans-serif;
    font-size: 12px;
    font-weight: bold;
    cursor: pointer;
    text-align: center;
    width: 75px;
    /* IE5兼容：使用float和width替代inline-block */
    float: left;
}

.download-line-button:hover {
    background-color: #00A000;
    border: 2px inset #808080;
}

.download-line-button:active {
    background-color: #006000;
    border: 2px inset #808080;
}

/* 所有按钮统一为绿色 */
.download-line-button.telecom,
.download-line-button.netcom,
.download-line-button.railcom,
.download-line-button.local {
    background-color: #008000;
    color: #FFFFFF;
}

.download-line-button.telecom:hover,
.download-line-button.netcom:hover,
.download-line-button.railcom:hover,
.download-line-button.local:hover {
    background-color: #00A000;
}

.download-line-button.telecom:active,
.download-line-button.netcom:active,
.download-line-button.railcom:active,
.download-line-button.local:active {
    background-color: #006000;
}

/* 公告样式 */
.announcement {
    background-color: #FFFFE0;
    border: 1px solid #FFD700;
    padding: 10px;
    margin-bottom: 15px;
}

/* 软件列表样式 */
.software-list {
    list-style-type: none;
    padding: 0;
    margin: 0;
}

.software-list li {
    padding: 8px;
    border-bottom: 1px solid #CCCCCC;
    margin-bottom: 0;
}

.software-list li:hover {
    background-color: #F5F5F5;
}

/* 通用页眉样式 - 兼容IE4 */
.page-header {
    background-color: #000080;
    color: white;
    padding: 10px;
    text-align: center;
}

.page-header h1 {
    margin: 0;
    font-size: 24px;
    color: white;
}

.page-header .subtitle {
    margin: 5px 0 0 0;
    font-size: 14px;
    color: white;
}

.page-header .announcement {
    background-color: #FFFFE0;
    color: #000000;
    border: 1px solid #FFD700;
    padding: 10px;
    margin: 10px auto;
    text-align: left;
    max-width: 800px;
}

/* 头部横幅样式 */
.header-banner {
    background-color: #000080;
    color: white;
    height: 80px;
    vertical-align: middle;
}

.header-banner h1 {
    margin: 0;
    font-size: 24px;
    color: white;
}

.header-banner p {
    margin: 5px 0 0 0;
    font-size: 14px;
    color: white;
}

/* 应用组信息表格样式 */
.app-group-info-table {
    width: 100%;
    border: 1px solid #CCCCCC;
    border-collapse: collapse;
}

.app-group-info-table th {
    background-color: #C0C0C0;
    padding: 8px;
    text-align: left;
    width: 120px;
}

.app-group-info-table td {
    padding: 8px;
    border: 1px solid #CCCCCC;
}

/* 搜索结果表格样式 */
.search-results-table {
    width: 100%;
    border: 1px solid #CCCCCC;
    border-collapse: collapse;
}

.search-results-table th {
    background-color: #C0C0C0;
    padding: 5px;
    text-align: center;
}

.search-results-table td {
    padding: 5px;
    border: 1px solid #CCCCCC;
    text-align: center;
}

.search-results-table td:nth-child(2) {
    text-align: left;
}

/* 施工中页面样式 */
.under-construction {
    background-color: #FFFFFF;
    font-family: "SimSun", "宋体", Arial, Helvetica, sans-serif;
    margin: 0;
    padding: 0;
}

.construction-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 20px;
}

.construction-icon {
    margin-bottom: 20px;
}

.construction-content {
    text-align: center;
    max-width: 600px;
}

.construction-content h1 {
    font-size: 24px;
    color: #000080;
    margin-bottom: 15px;
}

.construction-content p {
    font-size: 14px;
    color: #000000;
    margin-bottom: 15px;
    line-height: 1.5;
}

.construction-divider {
    border: 0;
    border-top: 1px solid #CCCCCC;
    margin: 20px 0;
    width: 100%;
}

/* 通用导航栏样式 */
.navigation-bar {
    background-color: #C0C0C0;
    border: 1px solid #808080;
    padding: 5px;
    margin-bottom: 10px;
}

/* 页面布局样式 - 从模板文件中提取 */
html, body {
    height: 100%;
    margin: 0;
    padding: 0;
    min-height: 640px;
    min-width: 480px;
}

.container {
    min-height: 100%;
    position: relative;
    padding-bottom: 40px;
}

.footer {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
}

/* 表格样式 - 从模板文件中提取 */
.content-table {
    border-collapse: collapse;
    width: 100%;
}

.content-table th {
    background-color: #C0C0C0;
    padding: 5px;
    text-align: left;
}

.content-table td {
    padding: 5px;
    border: 1px solid #CCCCCC;
}

/* 内容区域样式 */
#content-area {
    min-height: 400px;
}

/* 侧边栏样式 */
.sidebar {
    background-color: #F0F0F0;
    border-left: 1px solid #CCCCCC;
    padding: 10px;
    height: 100%;
}

/* 确保主内容区域的表格行高度为100% */
.main-content-table {
    width: 100%;
    height: 100%;
}

/* 确保表格行中的侧边栏单元格高度为100% */
.sidebar-cell {
    height: 100%;
    vertical-align: top;
}

/* 下载按钮样式 - 增强版 */
.download-button-large {
    background-color: #008000;
    color: white;
    padding: 8px 15px;
    text-decoration: none;
    display: inline-block;
    border: 2px outset #006000;
    font-size: 14px;
    font-weight: bold;
    margin: 5px;
}

.download-button-large:hover {
    background-color: #00A000;
    color: white;
    border: 2px inset #006000;
}

/* 搜索表单样式 */
.search-form {
    margin: 0;
}

.search-form input[type="text"] {
    width: 150px;
    margin-right: 5px;
}

/* 分类导航样式 */
.category-nav ul {
    list-style-type: none;
    padding-left: 0;
}

.category-nav li {
    margin-bottom: 8px;
}

.category-nav a {
    text-decoration: none;
    color: #0000FF;
}

.category-nav a:hover {
    color: #FF0000;
}

/* 热门下载表格样式 */
.hot-downloads-table {
    width: 100%;
    border: 1px solid #CCCCCC;
    border-collapse: collapse;
}

.hot-downloads-table th {
    background-color: #C0C0C0;
    padding: 5px;
    text-align: center;
}

.hot-downloads-table td {
    padding: 5px;
    border: 1px solid #CCCCCC;
}

/* 软件详情表格样式 */
.software-detail-table {
    width: 100%;
    border: 1px solid #CCCCCC;
    border-collapse: collapse;
}

.software-detail-table th {
    background-color: #C0C0C0;
    padding: 8px;
    text-align: left;
    width: 120px;
}

.software-detail-table td {
    padding: 8px;
    border: 1px solid #CCCCCC;
}

/* 软件列表表格样式 */
.software-list-table {
    width: 100%;
    border: 1px solid #CCCCCC;
    border-collapse: collapse;
}

.software-list-table th {
    background-color: #C0C0C0;
    padding: 5px;
    text-align: center;
}

.software-list-table td {
    padding: 5px;
    border: 1px solid #CCCCCC;
    text-align: center;
}

.software-list-table td:nth-child(2) {
    text-align: left;
}

/* 错误页面样式 */
.error-container {
    text-align: center;
    margin: 20px auto;
    max-width: 600px;
}

.error-icon {
    font-size: 48px;
    color: #FF0000;
    margin-bottom: 20px;
}

.error-title {
    font-size: 24px;
    color: #000080;
    margin-bottom: 15px;
}

.error-description {
    font-size: 14px;
    color: #000000;
    margin-bottom: 20px;
    text-align: left;
}

.error-help {
    background-color: #F0F0F0;
    border: 1px solid #CCCCCC;
    padding: 15px;
    margin: 20px 0;
    text-align: left;
}

.error-help h4 {
    margin-top: 0;
    color: #000080;
}

.error-help ul {
    margin-bottom: 0;
}

/* 响应式布局辅助类 */
.text-center {
    text-align: center;
}

.text-left {
    text-align: left;
}

.text-right {
    text-align: right;
}

.margin-top-10 {
    margin-top: 10px;
}

.margin-bottom-10 {
    margin-bottom: 10px;
}

.padding-10 {
    padding: 10px;
}

.navigation-bar a {
    color: #000080;
    text-decoration: none;
    margin-right: 15px;
}

.navigation-bar a:hover {
    text-decoration: underline;
}

/* 通用页脚样式 */
.page-footer {
    background-color: #000080;
    color: white;
    padding: 20px;
    text-align: center;
    margin-top: 20px;
}

.page-footer .friend-links {
    margin-bottom: 10px;
}

.page-footer .friend-links a {
    color: #FFFFFF;
    text-decoration: underline;
    margin-right: 10px;
}

.page-footer .friend-links a:hover {
    color: #FFFF00;
}

.page-footer .copyright {
    margin: 5px 0;
}

.page-footer .icp-info {
    margin: 5px 0;
}

/* 通用搜索框样式 */
.search-container {
    background-color: #C0C0C0;
    border: 1px solid #808080;
    padding: 10px;
    margin-bottom: 10px;
}

.search-container input[type="text"] {
    width: 200px;
    margin-right: 5px;
}

.search-container select {
    margin-right: 5px;
}

/* 通用时间显示样式 */
.time-display {
    text-align: right;
    font-size: 12px;
    color: #666666;
    margin-bottom: 10px;
}

/* 回到首页链接样式 */
.home-link {
    color: #FFFFFF;
    text-decoration: underline;
    margin-right: 10px;
}

.home-link:hover {
    color: #FFFF00;
}