/* 全局重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body {
    font-family: "Microsoft YaHei", Arial, sans-serif;
    background: #f2f5fa;
    color: #333;
    font-size: 16px;
    line-height: 1.9;
}
ul, li { list-style: none; }
a {
    text-decoration: none;
    color: #333;
    transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
}
a:hover {
    color: #0f3460;
}
img { max-width: 100%; height: auto; display: block; }
.container {
    width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

/* 头部渐变导航 高端大气 */
.header {
    background: linear-gradient(135deg, #0f3460 0%, #164078 100%);
    box-shadow: 0 4px 20px rgba(15, 52, 96, 0.25);
    position: sticky;
    top: 0;
    z-index: 999;
}
.header-inner {
    height: 100px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.logo img {
    height: 65px;
}
.nav ul {
    display: flex;
    gap: 6px;
}
.nav ul li a {
    font-size: 15px;
    font-weight: 500;
    color: #ffffff;
    padding: 12px 20px;
    border-radius: 50px;
    opacity: 0.9;
}
.nav ul li a:hover,
.nav ul li a.active {
    background: rgba(255,255,255,0.18);
    opacity: 1;
}

/* 面包屑 精致圆角阴影 */
.breadcrumbs {
    width: 1200px;
    margin: 25px auto;
    padding: 16px 22px;
    background: #fff;
    border-radius: 12px;
    font-size: 14px;
    color: #666;
    box-shadow: 0 3px 15px rgba(15, 52, 96, 0.08);
}
.breadcrumbs a { color: #0f3460; }

/* 主内容区 */
.main {
    width: 1200px;
    margin: 0 auto 50px;
}

/* 模块 立体卡片 加大气边框 */
.mod {
    background: #fff;
    border-radius: 16px;
    padding: 35px;
    margin-bottom: 35px;
    box-shadow: 0 8px 30px rgba(15, 52, 96, 0.1);
    border: 1px solid rgba(15, 52, 96, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.mod:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 40px rgba(15, 52, 96, 0.15);
}

/* 模块标题 豪华左侧渐变条 */
.mod-title {
    font-size: 22px;
    font-weight: 600;
    color: #111;
    padding-left: 18px;
    border-left: 6px solid;
    border-image: linear-gradient(180deg, #0f3460, #245293) 1;
    margin-bottom: 25px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.mod-title a.more {
    font-size: 14px;
    color: #0f3460;
    font-weight: normal;
    padding: 6px 14px;
    border: 1px solid #0f3460;
    border-radius: 50px;
}
.mod-title a.more:hover {
    background: #0f3460;
    color: #fff;
}

/* 新闻列表 精致圆点+间距加大 */
.news-list li {
    padding: 15px 0;
    border-bottom: 1px solid #eef2f7;
    display: flex;
    align-items: center;
}
.news-list li::before {
    content: "";
    width: 8px;
    height: 8px;
    background: linear-gradient(135deg, #0f3460, #245293);
    border-radius: 50%;
    margin-right: 15px;
}
.news-list li .time {
    color: #999;
    font-size: 13px;
    margin-right: 18px;
    min-width: 60px;
}
.news-list li a {
    flex: 1;
    font-size: 15px;
}

/* 双栏布局 */
.two-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 35px;
}

/* 标签云 圆角渐变按钮 */
.tags a {
    display: inline-block;
    padding: 9px 20px;
    background: linear-gradient(135deg, #f0f4fa, #e4ecf7);
    color: #0f3460;
    border-radius: 50px;
    margin: 0 12px 15px 0;
    font-size: 14px;
}
.tags a:hover {
    background: linear-gradient(135deg, #0f3460, #245293);
    color: #fff;
}

/* 栏目双栏 */
.list-wrap {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 35px;
}

/* 侧边栏 高级卡片 */
.sidebar {
    background: #fff;
    border-radius: 16px;
    padding: 30px;
    box-shadow: 0 8px 30px rgba(15, 52, 96, 0.1);
    border: 1px solid rgba(15, 52, 96, 0.05);
}
.sidebar h3 {
    font-size: 18px;
    color: #111;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 2px solid #eef2f7;
}
.sidebar-list li {
    padding: 12px 0;
    border-bottom: 1px solid #eef2f7;
}
.sidebar-list li a {
    font-size: 15px;
    display: block;
    padding-left: 15px;
    border-left: 3px solid transparent;
}
.sidebar-list li a:hover {
    border-left: 3px solid #0f3460;
    color: #0f3460;
}

/* 文章列表项 大气卡片 */
.article-item {
    background: #fff;
    border-radius: 16px;
    padding: 30px;
    margin-bottom: 25px;
    box-shadow: 0 6px 25px rgba(15, 52, 96, 0.08);
    transition: all 0.3s ease;
}
.article-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 35px rgba(15, 52, 96, 0.12);
}
.article-item h2 {
    font-size: 19px;
    margin-bottom: 15px;
}
.article-item h2 a {
    color: #111;
}
.article-item h2 a:hover {
    color: #0f3460;
}
.article-desc {
    color: #666;
    font-size: 15px;
    line-height: 1.8;
    margin-bottom: 15px;
}
.article-info {
    font-size: 13px;
    color: #999;
}

/* 文章内容页 超大留白高级感 */
.article-box {
    background: #fff;
    border-radius: 20px;
    padding: 50px;
    box-shadow: 0 10px 40px rgba(15, 52, 96, 0.1);
}
.article-box h1 {
    font-size: 30px;
    text-align: center;
    margin-bottom: 30px;
    color: #111;
    line-height: 1.5;
}
.article-meta {
    text-align: center;
    color: #999;
    font-size: 15px;
    margin-bottom: 40px;
}
.article-content {
    font-size: 17px;
    line-height: 2.1;
    color: #333;
}
.article-content p {
    margin-bottom: 28px;
}
.article-content img {
    margin: 35px auto;
    border-radius: 12px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
}

/* 上下篇 */
.page-link {
    margin-top: 45px;
    padding-top: 30px;
    border-top: 1px solid #eef2f7;
    font-size: 15px;
}

/* 分页 精致圆角按钮 */
.page {
    text-align: center;
    margin: 45px 0;
}
.page a {
    display: inline-block;
    padding: 9px 18px;
    border: 1px solid #dce3ee;
    margin: 0 6px;
    border-radius: 8px;
    font-size: 15px;
}
.page a:hover {
    background: #0f3460;
    color: #fff;
    border-color: #0f3460;
}

/* 底部 */
.footer {
    background: linear-gradient(135deg, #0f3460 0%, #164078 100%);
    padding: 50px 0;
    margin-top: 60px;
    border-top: none;
    text-align: center;
    color: #ccc;
    font-size: 14px;
}
.footer p {
    margin-bottom: 12px;
}

/* 回到顶部 悬浮立体 */
.backtop {
    position: fixed;
    right: 50px;
    bottom: 50px;
    width: 55px;
    height: 55px;
    background: linear-gradient(135deg, #0f3460, #245293);
    color: #fff;
    text-align: center;
    line-height: 55px;
    border-radius: 50%;
    box-shadow: 0 5px 20px rgba(15, 52, 96, 0.3);
    font-size: 22px;
}