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

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Microsoft YaHei', sans-serif;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            min-height: 100vh;
            padding: 20px;
        }

        .container {
            max-width: 1000px;
            margin: 0 auto;
            background: white;
            border-radius: 20px;
            box-shadow: 0 20px 60px rgba(0,0,0,0.3);
            padding: 40px;
        }

        .back-link {
            display: inline-block;
            margin-bottom: 20px;
            color: white;
            text-decoration: none;
            font-size: 0.9em;
            padding: 8px 16px;
            background: rgba(255, 255, 255, 0.2);
            border-radius: 8px;
            transition: all 0.3s;
        }

        .back-link:hover {
            background: rgba(255, 255, 255, 0.3);
            transform: translateX(-5px);
        }

        .back-link i {
            margin-right: 5px;
        }

        h1 {
            color: #333;
            text-align: center;
            margin-bottom: 10px;
            font-size: 2.5em;
        }

        .subtitle {
            text-align: center;
            color: #666;
            margin-bottom: 40px;
            font-size: 1.1em;
        }

        /* 四大亮点展示 */
        .highlights {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 40px;
            border-radius: 15px;
            margin: 30px 0;
            box-shadow: 0 10px 30px rgba(0,0,0,0.2);
        }

        .highlights h2 {
            color: white;
            margin-top: 0;
            text-align: center;
            font-size: 2em;
            margin-bottom: 30px;
        }

        .highlights-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin-top: 30px;
        }

        .highlight-card {
            background: rgba(255,255,255,0.15);
            padding: 25px;
            border-radius: 12px;
            backdrop-filter: blur(10px);
            transition: transform 0.3s, box-shadow 0.3s;
            cursor: pointer;
        }

        .highlight-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(0,0,0,0.3);
        }

        .highlight-card.clickable {
            cursor: pointer;
        }

        .highlight-icon {
            font-size: 3em;
            text-align: center;
            margin-bottom: 15px;
        }

        .highlight-card h3 {
            color: white;
            margin-top: 0;
            text-align: center;
            font-size: 1.3em;
            margin-bottom: 15px;
        }

        .highlight-card p {
            text-align: center;
            margin-bottom: 0;
            line-height: 1.8;
            font-size: 0.95em;
        }

        .standard-link {
            display: inline-block;
            margin-top: 15px;
            padding: 8px 16px;
            background: rgba(255,255,255,0.2);
            border-radius: 6px;
            text-decoration: none;
            color: white;
            font-size: 0.9em;
            transition: all 0.3s;
        }

        .standard-link:hover {
            background: rgba(255,255,255,0.3);
        }

        /* 下载按钮区域 */
        .download-section {
            text-align: center;
            margin: 40px 0;
        }

        .download-buttons {
            display: flex;
            gap: 20px;
            justify-content: center;
            flex-wrap: wrap;
            margin-top: 20px;
        }

        .download-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 18px 35px;
            font-size: 1.1em;
            font-weight: bold;
            text-decoration: none;
            border-radius: 10px;
            transition: all 0.3s;
            box-shadow: 0 4px 15px rgba(0,0,0,0.2);
        }

        .download-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 6px 20px rgba(0,0,0,0.3);
        }

        .download-btn-primary {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
        }

        .download-btn-success {
            background: linear-gradient(135deg, #28a745 0%, #20c997 100%);
            color: white;
        }

        /* 字体提示模态框 */
        .font-notice {
            background: linear-gradient(135deg, #fff3cd 0%, #ffe69c 100%);
            border-left: 5px solid #ffc107;
            padding: 20px;
            border-radius: 10px;
            margin: 30px 0;
            text-align: center;
        }

        .font-notice strong {
            color: #856404;
            font-size: 1.1em;
            display: block;
            margin-bottom: 10px;
        }

        .font-notice p {
            color: #856404;
            margin: 8px 0;
            line-height: 1.6;
        }

        /* 截图和视频区域 */
        .media-section {
            margin: 40px 0;
        }

        .media-section h2 {
            text-align: center;
            color: #333;
            margin-bottom: 25px;
            font-size: 1.8em;
        }

        .screenshot-area {
            background: #f8f9fa;
            border: 2px solid #dee2e6;
            border-radius: 10px;
            padding: 20px;
            text-align: center;
            min-height: 400px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 30px;
        }
        
        .screenshot-area img {
            max-width: 100%;
            height: auto;
            border-radius: 8px;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
        }

        .screenshot-placeholder {
            color: #6c757d;
        }

        .screenshot-placeholder i {
            font-size: 4em;
            margin-bottom: 20px;
            display: block;
        }

        .video-area {
            background: #f8f9fa;
            border: 2px solid #dee2e6;
            border-radius: 10px;
            padding: 20px;
            text-align: center;
            min-height: 300px;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        
        .video-area video {
            max-width: 100%;
            height: auto;
            border-radius: 8px;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
        }

        .video-placeholder {
            color: #6c757d;
        }

        .video-placeholder i {
            font-size: 4em;
            margin-bottom: 20px;
            display: block;
        }

        /* 使用说明 */
        .usage-section {
            background: #f8f9fa;
            padding: 30px;
            border-radius: 10px;
            margin: 40px 0;
        }

        .usage-section h2 {
            color: #333;
            margin-bottom: 20px;
            font-size: 1.8em;
        }

        .usage-steps {
            list-style: none;
            padding: 0;
        }

        .usage-steps li {
            padding: 15px;
            margin-bottom: 15px;
            background: white;
            border-radius: 8px;
            border-left: 4px solid #667eea;
            padding-left: 20px;
        }

        .usage-steps li strong {
            color: #667eea;
            font-size: 1.1em;
        }

        /* 标准详情模态框 */
        .modal {
            display: none;
            position: fixed;
            z-index: 1000;
            left: 0;
            top: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0,0,0,0.5);
            overflow: auto;
        }

        .modal-content {
            background-color: white;
            margin: 5% auto;
            padding: 30px;
            border-radius: 15px;
            width: 90%;
            max-width: 800px;
            max-height: 80vh;
            overflow-y: auto;
            box-shadow: 0 10px 40px rgba(0,0,0,0.3);
        }

        .close {
            color: #aaa;
            float: right;
            font-size: 28px;
            font-weight: bold;
            cursor: pointer;
        }

        .close:hover {
            color: #000;
        }

        .standard-details {
            margin-top: 20px;
        }

        .standard-details h3 {
            color: #667eea;
            margin-top: 25px;
            margin-bottom: 15px;
        }

        .standard-details ul {
            margin-left: 20px;
            line-height: 2;
        }

        @media (max-width: 768px) {
            .container {
                padding: 20px;
            }

            .highlights-grid {
                grid-template-columns: 1fr;
            }
            
            @media (min-width: 768px) {
                .highlights-grid {
                    grid-template-columns: repeat(3, 1fr);
                }
            }

            .download-buttons {
                flex-direction: column;
            }

            .download-btn {
                width: 100%;
                justify-content: center;
            }
        }

/* 落地页底部说明（生成页引用） */
.landing-foot {
    font-size: 0.9em;
    color: #666;
    margin-top: 24px;
    padding: 16px;
    background: #f1f3f5;
    border-radius: 8px;
    line-height: 1.6;
}