:root {
            --bg-color: #f5f5f5;
            --card-color: #ffffff;
            --text-color: #333333;
            --header-bg: #4dbcd7;
            --header-text: #ffffff;
            --border-color: #eeeeee;
            --secondary-text: #999999;
            --accent-color: #4dbcd7;
        }

        .dark-mode {
            --bg-color: #121212;
            --card-color: #1e1e1e;
            --text-color: #e0e0e0;
            --header-bg: #4dbcd7;
            --header-text: #ffffff;
            --border-color: #333333;
            --secondary-text: #aaaaaa;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            transition: background-color 0.3s, color 0.3s;
        }
        
        body {
            background-color: var(--bg-color);
            color: var(--text-color);
            min-height: 100vh;
            padding: 10px;
        }
        
        .news-detail-container {
            max-width: 800px;
            margin: 0 auto;
            background-color: var(--card-color);
            border-radius: 8px;
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
            overflow: hidden;
        }
        
        .news-detail-header {
            background-color: var(--header-bg);
            color: var(--header-text);
            padding: 15px 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        .news-detail-title {
            font-size: 18px;
            font-weight: bold;
            margin-bottom: 5px;
        }
        
        .news-detail-meta {
            display: flex;
            justify-content: space-between;
            color: var(--secondary-text);
            font-size: 12px;
            margin-bottom: 15px;
        }
        
        .news-detail-content {
            padding: 20px;
            line-height: 1.6;
        }
        
        .news-detail-text {
            white-space: pre-line;
            text-align: justify;
            font-size: 16px;
        }
        
        .theme-toggle {
            background: none;
            border: none;
            color: var(--header-text);
            cursor: pointer;
            font-size: 16px;
            display: flex;
            align-items: center;
            gap: 5px;
        }
        
        .home-button {
            padding: 8px 15px;
            background-color: #32afcd;
            color: white;
            border: none;
            border-radius: 4px;
            cursor: pointer;
            text-decoration: none;
            font-size: 14px;
            transition: background-color 0.3s;
        }

        .home-button:hover {
            background-color: #e0e0e0;
            color: #333;
        }
        
        .action-buttons {
            display: flex;
            justify-content: space-between;
            margin-top: 20px;
            flex-wrap: nowrap;
            overflow-x: auto;
            gap: 10px;
            padding-bottom: 5px;
        }
        
        .right-buttons {
            display: flex;
            gap: 10px;
            margin-left: auto;
        }
        
        .action-buttons::-webkit-scrollbar {
            height: 4px;
        }
        
        .action-buttons::-webkit-scrollbar-thumb {
            background: #ccc;
            border-radius: 2px;
        }
        
        .copy-button {
            background-color: var(--card-color);
            color: var(--header-bg);
            border: 1px solid var(--header-bg);
            border-radius: 4px;
            padding: 8px 15px;
            cursor: pointer;
            white-space: nowrap;
        }
        
        .copy-button:hover {
            background-color: var(--header-bg);
            color: white;
        }
        
        .poster-button {
            background-color: #ff6b6b;
            color: white;
            border: none;
            border-radius: 4px;
            padding: 8px 15px;
            cursor: pointer;
            white-space: nowrap;
        }
        
        .poster-button:hover {
            background-color: #ff5252;
        }
        
        .tts-button {
            background-color: #4dbcd7;
            color: white;
            border: none;
            border-radius: 4px;
            padding: 8px 15px;
            cursor: pointer;
            white-space: nowrap;
        }
        
        .tts-button:hover {
            background-color: #3aa8c4;
        }
        
        .loading {
            padding: 10px;
        }

        .toast {
            position: fixed;
            top: 20px;
            left: 50%;
            transform: translateX(-50%);
            background-color: rgba(0, 0, 0, 0.7);
            color: white;
            padding: 10px 20px;
            border-radius: 4px;
            z-index: 1000;
            display: none;
        }
        
        .poster-modal {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0, 0, 0, 0.8);
            z-index: 1001;
            justify-content: center;
            align-items: center;
        }
        
        .poster-content {
            background-color: white;
            border-radius: 8px;
            max-width: 90%;
            max-height: 90%;
            overflow: auto;
            text-align: center;
        }
        
        .poster-image {
            max-width: 100%;
            max-height: 50vh;
        }
        
        .poster-actions {
            margin-top: 15px;
            display: flex;
            justify-content: center;
            gap: 10px;
        }
        
        .poster-actions button {
            padding: 8px;
            border: none;
            border-radius: 4px;
            cursor: pointer;
            margin: 10px;
        }
        
        .download-poster {
            background-color: #4dbcd7;
            color: white;
        }
        
        .close-poster {
            background-color: #999;
            color: white;
        }
        
        .poster-loading {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0, 0, 0, 0.5);
            z-index: 1024;
            justify-content: center;
            align-items: center;
            color: white;
            font-size: 18px;
        }
        
        .spinner {
            border: 4px solid rgba(255, 255, 255, 0.3);
            border-radius: 50%;
            border-top: 4px solid white;
            width: 40px;
            height: 40px;
            animation: spin 1s linear infinite;
            margin-bottom: 15px;
        }
        
        @keyframes spin {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }
        
        .poster-template-container {
            position: fixed;
            left: -9999px;
            top: 0;
            width: 375px;
            min-height: 60%;
            z-index: -9999;
            opacity: 0;
            pointer-events: none;
        }
        
        .poster-header {
            background-color: var(--accent-color);
            color: white;
            padding: 15px;
            text-align: center;
            font-size: 18px;
            font-weight: bold;
            margin-bottom: 0;
        }
        
        .poster-body {
            background-color: white;
            padding: 20px;
            flex-grow: 1;
            box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
        }
        
        .poster-title {
            font-size: 16px;
            font-weight: bold;
            margin-bottom: 15px;
            color: #333;
            line-height: 1.3;
        }
        
        .poster-content-text {
            font-size: 14px;
            line-height: 1.6;
            color: #555;
            margin-bottom: 20px;
            text-align: justify;
            white-space: pre-line; 
            word-break: break-word;
        }
        
        .poster-meta {
            display: flex;
            justify-content: space-between;
            font-size: 10px;
            color: #888;
            margin-bottom: 20px;
            padding-bottom: 15px;
            border-bottom: 1px dashed #ddd;
        }
        
        .poster-footer {
            text-align: center;
            margin-top: 20px;
            color: var(--accent-color);
            font-size: 14px;
        }
        
        .poster-qrcode {
            width: 100px;
            height: 100px;
            margin: 15px auto;
            padding: 5px;
            background-color: white;
            display: flex;
            align-items: center;
            justify-content: center;
            border: 1px solid #eee;
        }
        
        .poster-qrcode img {
            width: 100%;
            height: 100%;
        }
        
        .qrcode-label {
            font-size: 12px;
            color: #666;
            text-align: center;
            margin-top: 5px;
        }
        
        .qrcode-fallback {
            width: 100%;
            padding: 10px;
            background: #f5f5f5;
            border: 1px dashed #ccc;
            word-break: break-all;
            font-size: 12px;
            color: #333;
            text-align: center;
        }
        
        /* 语音设置按钮样式 */
        .tts-container {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        
        .tts-settings-button {
            background: none;
            border: none;
            color: var(--header-bg);
            cursor: pointer;
            display: flex;
            align-items: center;
            padding: 5px;
            border-radius: 4px;
            width: 24px;
            height: 24px;
        }
        
        .tts-settings-button:hover {
            background-color: rgba(77, 188, 215, 0.1);
        }
        
        .tts-settings-button svg {
            width: 100%;
            height: 100%;
        }
        
        /* 语音设置模态框样式 */
        .tts-modal {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0, 0, 0, 0.5);
            z-index: 1002;
            justify-content: center;
            align-items: center;
        }
        
        .tts-modal-content {
            background-color: var(--card-color);
            border-radius: 8px;
            padding: 15px;
            width: 90%;
            max-width: 300px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
        }
        
        .tts-modal-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 15px;
        }
        
        .tts-modal-title {
            font-size: 18px;
            font-weight: bold;
            color: var(--text-color);
        }
        
        .tts-modal-close {
            background: none;
            border: none;
            font-size: 20px;
            cursor: pointer;
            color: var(--secondary-text);
        }
        
        .tts-select-wrapper {
            margin-bottom: 15px;
        }
        
        .tts-select-label {
            display: block;
            margin-bottom: 8px;
            font-size: 14px;
            color: var(--text-color);
        }
        
        .tts-select {
            width: 100%;
            padding: 10px;
            border: 1px solid var(--border-color);
            border-radius: 4px;
            background-color: var(--card-color);
            color: var(--text-color);
            font-size: 14px;
        }
        
        .tts-modal-footer {
            display: flex;
            justify-content: flex-end;
            margin-top: 20px;
        }
        
        .tts-modal-button {
            padding: 8px 15px;
            border-radius: 4px;
            cursor: pointer;
            font-size: 14px;
        }
        
        .tts-modal-cancel {
            background-color: transparent;
            border: 1px solid var(--border-color);
            color: var(--text-color);
            margin-right: 10px;
        }
        
        .tts-modal-confirm {
            background-color: var(--header-bg);
            color: white;
            border: none;
        }
        .related-news {
            margin-top: 30px;
            padding-top: 20px;
            border-top: 1px solid var(--border-color);
        }
        
        .related-news-title {
            font-size: 18px;
            font-weight: bold;
            margin-bottom: 15px;
            color: var(--text-color);
            padding-left: 10px;
            border-left: 4px solid var(--accent-color);
        }
        
        .related-news-list {
            list-style: none;
        }
        
        .related-news-item {
            padding: 12px 0;
            border-bottom: 1px dashed var(--border-color);
            transition: background-color 0.2s;
        }
        
        .related-news-item:hover {
            background-color: rgba(77, 188, 215, 0.05);
        }
        
        .related-news-item:last-child {
            border-bottom: none;
        }
        
        .related-news-link {
            display: block;
            text-decoration: none;
            color: var(--text-color);
            transition: color 0.2s;
        }
        
        .related-news-link:hover {
            color: var(--accent-color);
        }
        
        .related-news-item-title {
            font-size: 16px;
            margin-bottom: 5px;
            line-height: 1.4;
        }
        
        .related-news-item-meta {
            display: flex;
            justify-content: space-between;
            font-size: 12px;
            color: var(--secondary-text);
        }
        
        @media (max-width: 480px) {
            .action-buttons {
                gap: 8px;
            }
            
            .tts-button, .copy-button, .poster-button {
                padding: 8px 12px;
                font-size: 13px;
            }
             .related-news-item-title {
                font-size: 14px;
            }
            
            
        }