:root {
            --primary-color: #0d6efd;
            --text-color: #212529;
            --bg-color: #ffffff;
            --card-bg: #ffffff;
            --border-color: #dee2e6;
            --nav-bg: rgba(255, 255, 255, 0.95);
            --subtitle-color: #6c757d;
        }

        /* 深色模式 */
        body.dark-theme {
            --text-color: #e9ecef;
            --bg-color: #1a1a2e;
            --card-bg: #16213e;
            --border-color: #2d3748;
            --nav-bg: rgba(22, 33, 62, 0.95);
            --subtitle-color: #adb5bd;
        }

        body.dark-theme {
            background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            background: #f5f5f5;
            min-height: 100vh;
            padding: 0;
            margin: 0;
        }

        /* 顶部导航栏 */
        .top-nav {
            background: var(--nav-bg);
            backdrop-filter: blur(10px);
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
            padding: 1rem 0;
        }

        /* LOGO 容器 */
        .logo-container {
            display: flex;
            align-items: center;
        }

        .site-logo {
            height: 50px !important;
            width: auto !important;
            max-width: none !important;
            display: block;
            filter: drop-shadow(0 2px 4px rgba(0,0,0,0.1));
            transition: transform 0.3s ease;
        }

        .site-logo:hover {
            transform: scale(1.05);
        }

        .top-nav .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }

        /* 控制按钮组 */
        .nav-controls {
            display: flex;
            gap: 0.5rem;
            align-items: center;
        }

        .control-btn {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            border: 2px solid var(--border-color);
            background: var(--card-bg);
            color: var(--text-color);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all 0.3s ease;
            font-size: 1.125rem;
        }

        .control-btn:hover {
            transform: scale(1.1);
            border-color: var(--primary-color);
            color: var(--primary-color);
        }

        .control-btn.active {
            background: var(--primary-color);
            color: white;
            border-color: var(--primary-color);
        }

        /* 语言切换器 */
        .language-switcher {
            position: relative;
            display: inline-block;
        }

        .lang-toggle-btn {
            background: none;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 6px 12px;
            cursor: pointer;
            color: var(--text-color);
            font-size: 14px;
            display: flex;
            align-items: center;
            gap: 6px;
            transition: all 0.3s ease;
            min-width: 100px;
        }

        .lang-toggle-btn:hover {
            background: rgba(0, 0, 0, 0.05);
            border-color: var(--primary-color);
        }

        body.dark-theme .lang-toggle-btn:hover {
            background: rgba(255, 255, 255, 0.1);
        }

        .lang-dropdown {
            position: absolute;
            top: calc(100% + 5px);
            right: 0;
            background: white;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            display: none;
            min-width: 140px;
            z-index: 1000;
        }

        body.dark-theme .lang-dropdown {
            background: #1a2332;
            border-color: rgba(255, 255, 255, 0.1);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
        }

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

        .lang-option {
            padding: 10px 16px;
            cursor: pointer;
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-color);
            text-decoration: none;
            transition: all 0.2s ease;
            border: none;
            background: none;
            width: 100%;
            text-align: left;
            font-size: 14px;
            white-space: nowrap;
        }

        .lang-option:hover {
            background: rgba(0, 0, 0, 0.05);
        }

        body.dark-theme .lang-option:hover {
            background: rgba(255, 255, 255, 0.1);
        }

        .lang-option.active {
            color: var(--primary-color);
            font-weight: 600;
        }

        .lang-option span {
            flex: 1;
            white-space: nowrap;
        }

        .lang-option .checkmark {
            margin-left: auto;
            color: var(--primary-color);
            display: none;
            flex-shrink: 0;
        }

        .lang-option.active .checkmark {
            display: block;
        }

        /* 主题切换器 */
        .theme-switcher {
            position: relative;
            display: inline-block;
        }

        .theme-toggle-btn {
            background: none;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 6px 12px;
            cursor: pointer;
            color: var(--text-color);
            font-size: 16px;
            display: flex;
            align-items: center;
            gap: 6px;
            transition: all 0.3s ease;
        }

        .theme-toggle-btn:hover {
            background: rgba(0, 0, 0, 0.05);
            border-color: var(--primary-color);
        }

        body.dark-theme .theme-toggle-btn:hover {
            background: rgba(255, 255, 255, 0.1);
        }

        .theme-dropdown {
            position: absolute;
            top: calc(100% + 5px);
            right: 0;
            background: white;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            display: none;
            min-width: 180px;
            z-index: 1000;
        }

        body.dark-theme .theme-dropdown {
            background: #1a2332;
            border-color: rgba(255, 255, 255, 0.1);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
        }

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

        .theme-option {
            padding: 10px 16px;
            cursor: pointer;
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-color);
            text-decoration: none;
            transition: all 0.2s ease;
            border: none;
            background: none;
            width: 100%;
            text-align: left;
            font-size: 14px;
            white-space: nowrap;
        }

        .theme-option:hover {
            background: rgba(0, 0, 0, 0.05);
        }

        body.dark-theme .theme-option:hover {
            background: rgba(255, 255, 255, 0.1);
        }

        .theme-option.active {
            color: var(--primary-color);
            font-weight: 600;
        }

        .theme-option i {
            font-size: 16px;
            width: 20px;
            text-align: center;
            flex-shrink: 0;
        }

        .theme-option span {
            flex: 1;
            white-space: nowrap;
        }

        .theme-option .checkmark {
            margin-left: auto;
            color: var(--primary-color);
            display: none;
            flex-shrink: 0;
        }

        .theme-option.active .checkmark {
            display: block;
        }

        /* 头部导航链接 */
        .header-nav-links {
            display: flex;
            align-items: center;
            gap: 5px;
        }

        .nav-link {
            color: var(--text-color);
            text-decoration: none;
            font-size: 14px;
            font-weight: 500;
            transition: color 0.3s ease;
            padding: 5px 8px;
        }

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

        .nav-divider {
            color: #ddd;
            margin: 0 3px;
        }

        /* 主容器 */
        .main-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 1.5rem;
        }

        /* 卡片网格 */
        .articles-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 1.5rem;
            margin: 1.5rem auto 0;
            max-width: 1400px;
            padding: 0 20px;
            justify-content: center;
        }

        /* 文章卡片 */
        .article-card {
            background: var(--card-bg);
            border-radius: 0;
            overflow: hidden;
            box-shadow: 0 4px 6px rgba(0,0,0,0.1);
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
            height: 100%;
        }

        .article-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 12px 24px rgba(0,0,0,0.15);
        }

        .article-image-container {
            position: relative;
            width: 100%;
            padding-top: 56.25%; /* 16:9 */
            overflow: hidden;
            background: #f8f9fa;
        }

        .article-image {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .audio-btn {
            position: absolute;
            top: 12px;
            right: 12px;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: rgba(13, 110, 253, 0.9);
            border: none;
            color: white;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.25rem;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: 0 2px 8px rgba(0,0,0,0.3);
            z-index: 10;
        }

        .audio-btn:hover {
            transform: scale(1.1);
            background: rgba(13, 110, 253, 1);
        }

        .audio-btn:active {
            transform: scale(0.95);
        }

        .article-content {
            padding: 1.25rem;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .article-title {
            font-size: 1.125rem;
            line-height: 1.6;
            margin-bottom: 0.75rem;
            color: var(--text-color);
            text-decoration: none;
            display: block;
            font-weight: 600;
        }

        .article-title:hover {
            color: var(--primary-color);
        }

        .translation-divider {
            height: 1px;
            background: linear-gradient(to right, transparent, #dee2e6 20%, #dee2e6 80%, transparent);
            margin: 0.75rem 0;
        }

        .translation-text {
            font-size: 0.9rem;
            color: #6c757d;
            line-height: 1.5;
            border-left: 3px solid var(--primary-color);
            padding-left: 0.75rem;
        }

        .article-footer {
            padding: 1rem 1.25rem;
            border-top: 1px solid var(--border-color);
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-top: auto;
        }

        .article-date {
            font-size: 0.875rem;
            color: #6c757d;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .read-more-btn {
            padding: 0.5rem 1rem;
            background: var(--primary-color);
            color: white;
            border: none;
            border-radius: 8px;
            font-size: 0.875rem;
            font-weight: 500;
            text-decoration: none;
            transition: all 0.3s ease;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }

        .read-more-btn:hover {
            background: #0b5ed7;
            color: white;
            transform: translateX(4px);
        }

        /* Ruby标签样式 */
        ruby {
            text-align: left;
        }

        rt {
            font-size: 0.5em;
            color: #6c757d;
        }

        /* 分页 */
        .pagination-container {
            margin-top: 2rem;
            display: flex;
            justify-content: center;
        }

        .pagination {
            display: flex;
            gap: 0.5rem;
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .page-item {
            border-radius: 8px;
            overflow: hidden;
        }

        .page-link {
            padding: 0.5rem 1rem;
            background: white;
            color: var(--primary-color);
            text-decoration: none;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            transition: all 0.3s ease;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .page-link:hover {
            background: var(--primary-color);
            color: white;
            border-color: var(--primary-color);
        }

        .page-item.active .page-link {
            background: var(--primary-color);
            color: white;
            border-color: var(--primary-color);
        }

        .page-item.disabled .page-link {
            opacity: 0.5;
            pointer-events: none;
        }

        /* 空状态 */
        .empty-state {
            text-align: center;
            padding: 3rem 1rem;
            background: white;
            border-radius: 16px;
            margin-top: 2rem;
        }

        .empty-state i {
            font-size: 4rem;
            color: #dee2e6;
            margin-bottom: 1rem;
        }

        .empty-state h3 {
            color: #6c757d;
            font-size: 1.25rem;
        }

        /* 移动端优化 */
        @media (max-width: 768px) {
            .main-container {
                padding: 0.5rem;
            }

            .articles-grid {
                grid-template-columns: 1fr;
                gap: 0.5rem;
            }

            .top-nav .container {
                padding: 0 0.5rem;
                gap: 10px;
            }

            .control-btn {
                width: 36px;
                height: 36px;
                font-size: 1rem;
            }

            .pagination {
                gap: 0.25rem;
            }

            .page-link {
                padding: 0.375rem 0.625rem;
                font-size: 0.875rem;
            }

            .page-text {
                display: none;
            }

            .article-title {
                font-size: 1rem;
            }

            .read-more-btn {
                padding: 0.375rem 0.75rem;
                font-size: 0.8125rem;
            }

            .audio-btn {
                width: 40px;
                height: 40px;
                font-size: 1rem;
            }
        }

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

        .article-card {
            animation: fadeIn 0.5s ease;
        }

        /* 底部播放控制条 */
        .bottom-player {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            background: #2c2c2c;
            color: white;
            z-index: 1000;
            box-shadow: 0 -2px 10px rgba(0,0,0,0.3);
        }

        .player-progress-bar {
            height: 3px;
            background: rgba(255,255,255,0.2);
            cursor: pointer;
            position: relative;
        }

        .player-progress {
            height: 100%;
            background: #ff6b00;
            width: 0;
            transition: width 0.1s;
        }

        .player-content {
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 12px 20px;
            gap: 40px;
            max-width: 1200px;
            margin: 0 auto;
        }

        .player-left {
            display: flex;
            align-items: center;
            gap: 12px;
            flex: 1;
            min-width: 0;
        }

        .player-cover {
            width: 50px;
            height: 50px;
            border-radius: 4px;
            object-fit: cover;
            background: #444;
            transition: transform 0.2s ease, opacity 0.2s ease;
        }

        .player-cover:hover {
            transform: scale(1.05);
            opacity: 0.8;
        }

        .player-info {
            flex: 1;
            min-width: 0;
            transition: opacity 0.2s ease;
        }

        .player-info:hover {
            opacity: 0.8;
        }

        .player-title {
            font-size: 14px;
            font-weight: 500;
            color: white;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        .player-subtitle {
            font-size: 12px;
            color: rgba(255,255,255,0.6);
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
            margin-top: 2px;
        }

        .player-center {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .player-btn {
            background: transparent;
            border: none;
            color: white;
            cursor: pointer;
            padding: 8px;
            border-radius: 50%;
            transition: all 0.2s;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .player-btn:hover {
            background: rgba(255,255,255,0.1);
        }

        .player-btn i {
            font-size: 20px;
        }

        .player-btn-main {
            width: 40px;
            height: 40px;
            background: #ff6b00;
        }

        .player-btn-main:hover {
            background: #ff8533;
        }

        .player-btn-main i {
            font-size: 24px;
        }

        .player-right {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .player-time {
            font-size: 13px;
            color: rgba(255,255,255,0.8);
            min-width: 100px;
            text-align: center;
        }

        #playbackRateText {
            font-size: 13px;
            color: white;
            margin-right: 4px;
        }

        /* 速度控制菜单 */
        .speed-control {
            position: relative;
        }

        .speed-btn {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .speed-menu {
            position: absolute;
            bottom: 100%;
            right: 0;
            background: #3a3a3a;
            border-radius: 8px;
            padding: 8px 0;
            margin-bottom: 8px;
            min-width: 80px;
            box-shadow: 0 4px 12px rgba(0,0,0,0.3);
        }

        .speed-option {
            padding: 8px 16px;
            color: white;
            cursor: pointer;
            transition: background 0.2s;
            text-align: center;
            font-size: 14px;
        }

        .speed-option:hover {
            background: rgba(255,255,255,0.1);
        }

        .speed-option.active {
            background: #ff6b00;
            font-weight: 500;
        }

        /* 深色模式适配 */
        body.dark-theme .bottom-player {
            background: #1a1a1a;
        }

        /* 移动端适配 */
        @media (max-width: 768px) {
            .player-content {
                padding: 10px 15px;
                gap: 10px;
            }

            .player-cover {
                width: 40px;
                height: 40px;
            }

            .player-title {
                font-size: 13px;
            }

            .player-subtitle {
                font-size: 11px;
            }

            .player-btn i {
                font-size: 18px;
            }

            .player-btn-main {
                width: 36px;
                height: 36px;
            }

            .player-btn-main i {
                font-size: 20px;
            }

            .player-time {
                font-size: 12px;
                min-width: 80px;
            }

            #playbackRateText {
                display: none;
            }

            /* 移动端底部导航 */
            .mobile-nav {
                position: fixed;
                bottom: 0;
                left: 0;
                right: 0;
                background: white;
                border-top: 1px solid #e5e7eb;
                display: flex;
                justify-content: space-around;
                padding: 10px 0;
                z-index: 999;
            }

            body.dark-theme .mobile-nav {
                background: rgba(22, 33, 62, 0.98);
                border-top: 1px solid rgba(255, 255, 255, 0.1);
            }

            .mobile-nav-item {
                flex: 1;
                display: flex;
                flex-direction: row;
                align-items: center;
                justify-content: center;
                gap: 6px;
                color: #6b7280;
                text-decoration: none;
                font-size: 13px;
                padding: 8px 0;
            }

            .mobile-nav-item i {
                font-size: 18px;
            }

            .mobile-nav-item span {
                display: inline;
            }

            body.dark-theme .mobile-nav-item {
                color: rgba(255, 255, 255, 0.6);
            }

            .mobile-nav-item.active {
                color: #667eea;
                font-weight: 600;
            }

            body.dark-theme .mobile-nav-item.active {
                color: #00D4FF;
            }

            /* 为主内容添加底部padding，避免被底部导航遮挡 */
            .main-container {
                padding-bottom: 70px;
            }
        }

        /* 桌面端隐藏移动端导航 */
        @media (min-width: 769px) {
            .mobile-nav {
                display: none;
            }
        }

        /* 页脚版权 */
        .footer {
            padding: 30px 20px;
            text-align: center;
            font-size: 12px;
            color: #6b7280;
            background: #f9fafb;
            border-top: 1px solid #e5e7eb;
            margin-top: 40px;
        }

        .footer a {
            color: #667eea;
            text-decoration: none;
            transition: color 0.3s ease;
        }

        .footer a:hover {
            color: #5568d3;
            text-decoration: underline;
        }

        body.dark-theme .footer {
            background: rgba(20, 23, 34, 0.6);
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: rgba(255, 255, 255, 0.4);
        }

        body.dark-theme .footer a {
            color: #00D4FF;
        }

        body.dark-theme .footer a:hover {
            color: #00E5FF;
        }

        @media (max-width: 768px) {
            /* 移动端隐藏顶部导航链接 */
            .header-nav-links,
            .nav-lang-divider {
                display: none;
            }

            /* 移动端调整切换器按钮大小 */
            .lang-toggle-btn,
            .theme-toggle-btn {
                padding: 8px 10px;
                min-width: 80px;
                font-size: 13px;
            }

            .lang-toggle-btn span,
            .theme-toggle-btn span {
                display: none; /* 隐藏文字，只显示图标 */
            }

            .lang-toggle-btn {
                min-width: 44px; /* 只显示图标时的最小触摸目标 */
            }

            .theme-toggle-btn {
                min-width: 44px;
            }

            /* 移动端下拉菜单适配 */
            .lang-dropdown {
                min-width: 120px;
            }

            .theme-dropdown {
                min-width: 160px;
            }
        }