/* 全局重置和基础样式 */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        :root {
            --primary-color: #0d47a1;
            --secondary-color: #1976d2;
            --accent-color: #ff6b35;
            --light-bg: #f8f9fa;
            --dark-text: #333;
            --light-text: #fff;
            --border-color: #e0e0e0;
            --shadow: 0 2px 10px rgba(0,0,0,0.1);
        }

        body {
            font-family: "Microsoft YaHei", "PingFang SC", sans-serif;
            line-height: 1.8;
            color: var(--dark-text);
            background-color: #f5f7fa;
        }

        a {
            text-decoration: none;
            color: var(--secondary-color);
            transition: color 0.3s;
        }

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

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 15px;
        }

        /* 头部样式 */
        header {
            background-color: var(--light-text);
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }

        .top-bar {
            background-color: var(--primary-color);
            color: var(--light-text);
            padding: 8px 0;
            font-size: 14px;
            display: none;
        }

        .top-bar-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .contact-info span {
            margin-right: 15px;
            display: flex;
            align-items: center;
        }

        .language-switcher a {
            color: var(--light-text);
            margin-left: 10px;
        }

        .main-header {
            padding: 15px 0;
        }

        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .logo {
            font-size: 24px;
            font-weight: 700;
            color: var(--primary-color);
        }

        .tagline {
            font-size: 14px;
            color: var(--secondary-color);
            margin-top: 5px;
        }

        nav ul {
            display: flex;
            list-style: none;
        }

        nav li {
            margin: 0 10px;
        }

        nav a {
            color: var(--dark-text);
            font-weight: 600;
            padding: 10px 15px;
            display: block;
            border-radius: 4px;
            transition: background-color 0.3s;
        }

        nav a:hover,
        nav a.active {
            background-color: var(--light-bg);
            color: var(--primary-color);
        }

        .menu-toggle {
            display: none;
            flex-direction: column;
            cursor: pointer;
        }

        .menu-toggle span {
            width: 25px;
            height: 3px;
            background-color: var(--primary-color);
            margin: 3px 0;
            transition: 0.3s;
        }

        /* 主要内容区域 */
        main {
            padding: 30px 0 50px;
        }

        .content-grid {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 30px;
        }

        /* 新闻详情 */
        .news-detail {
            background: var(--light-text);
            padding: 40px;
            border-radius: 8px;
            box-shadow: var(--shadow);
        }

        .detail-title {
            font-size: 28px;
            font-weight: 700;
            color: var(--primary-color);
            margin-bottom: 15px;
            line-height: 1.4;
        }

        .detail-meta {
            font-size: 14px;
            color: #777;
            margin-bottom: 25px;
            display: flex;
            gap: 20px;
        }

        .detail-content {
            font-size: 17px;
            line-height: 1.9;
            color: var(--dark-text);
        }

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

        .detail-content h2,
        .detail-content h3 {
            margin: 30px 0 15px;
            color: var(--primary-color);
        }

        /* 上一篇 / 下一篇导航 */
        .post-navigation {
            margin-top: 40px;
            padding-top: 25px;
            border-top: 1px solid var(--border-color);
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 15px;
        }

        .nav-link.prev,
        .nav-link.next {
            display: inline-flex;
            align-items: center;
            font-size: 16px;
            color: var(--dark-text);
            max-width: 48%;
        }

        .nav-link.prev:hover,
        .nav-link.next:hover {
            color: var(--primary-color);
        }

        .nav-link.prev i {
            margin-right: 8px;
        }

        .nav-link.next i {
            margin-left: 8px;
        }

        /* 侧边栏 */
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 25px;
        }

        .sidebar-widget {
            background: var(--light-text);
            padding: 20px;
            border-radius: 8px;
            box-shadow: var(--shadow);
        }

        .widget-title {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 15px;
            color: var(--primary-color);
            padding-bottom: 8px;
            border-bottom: 1px solid var(--border-color);
        }

        .quick-links ul,
        .hot-news-list ul {
            list-style: none;
        }

        .quick-links li,
        .hot-news-list li {
            margin-bottom: 10px;
            padding-left: 15px;
            position: relative;
        }

        .quick-links li:before,
        .hot-news-list li:before {
            content: "•";
            position: absolute;
            left: 0;
            color: var(--accent-color);
        }

        .hot-news-list a {
            color: var(--dark-text);
        }

        .hot-news-list a:hover {
            color: var(--primary-color);
        }

        /* 页脚 */
        footer {
            background-color: var(--primary-color);
            color: var(--light-text);
            padding: 30px 0 15px;
        }

        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 25px;
            margin-bottom: 20px;
        }

        .footer-column h3 {
            font-size: 18px;
            margin-bottom: 15px;
            position: relative;
            padding-bottom: 8px;
        }

        .footer-column h3:after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 0;
            width: 40px;
            height: 2px;
            background-color: var(--accent-color);
        }

        .footer-links ul {
            list-style: none;
        }

        .footer-links li {
            margin-bottom: 8px;
        }

        .footer-links a {
            color: var(--light-text);
            opacity: 0.9;
        }

        .footer-links a:hover {
            opacity: 1;
            color: var(--accent-color);
        }

        .copyright {
            text-align: center;
            padding-top: 15px;
            border-top: 1px solid rgba(255,255,255,0.1);
            font-size: 13px;
            opacity: 0.8;
        }

        /* 响应式 */
        @media (min-width: 992px) {
            .top-bar {
                display: block;
            }
        }

        @media (max-width: 991px) {
            .content-grid {
                grid-template-columns: 1fr;
            }

            .sidebar {
                display: none;
            }

            .news-detail {
                padding: 25px;
            }

            .detail-title {
                font-size: 24px;
            }

            .nav-link.prev,
            .nav-link.next {
                max-width: 100%;
            }
        }

        @media (max-width: 768px) {
            .menu-toggle {
                display: flex;
            }

            nav {
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: var(--light-text);
                box-shadow: 0 5px 10px rgba(0,0,0,0.1);
                clip-path: polygon(0 0, 100% 0, 100% 0, 0 0);
                transition: clip-path 0.4s ease-in-out;
            }

            nav.active {
                clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
            }

            nav ul {
                flex-direction: column;
            }

            nav li {
                margin: 0;
            }

            nav a {
                padding: 12px 20px;
                border-bottom: 1px solid var(--border-color);
            }

            .post-navigation {
                flex-direction: column;
            }
        }