/* --- 继承全局高端质感 --- */
        :root {
            --primary: #1a1a1a;
            --secondary: #666;
            --accent: #2b6cb0; /* 替换掉金黄色，使用深邃的“智库蓝”，体现科技与冷静 */
            --accent-light: #ebf8ff;
            --bg: #fcfcfc;
            --border: #e2e8f0;
        }

        body {
            margin: 0;
            font-family: "Helvetica Neue", Helvetica, "PingFang SC", "Microsoft YaHei", sans-serif;
            background-color: var(--bg);
            color: var(--primary);
            line-height: 1.6;
            /* 保持统一的噪点纹理 */
            background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)' opacity='0.04'/%3E%3C/svg%3E");
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* --- 头部：极简科技感 --- */
        .ai-header {
            text-align: center;
            padding: 100px 0 60px;
            position: relative;
        }

        .ai-badge {
            display: inline-block;
            background: var(--accent-light);
            color: var(--accent);
            font-size: 12px;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 30px;
            margin-bottom: 20px;
            letter-spacing: 1px;
            text-transform: uppercase;
        }

        .ai-title {
            font-size: 48px;
            font-weight: 300;
            margin-bottom: 20px;
            letter-spacing: -1px;
        }
        
        .ai-title strong {
            font-weight: 700;
            /* 渐变文字效果 */
            background: linear-gradient(90deg, #1a1a1a 0%, #4a5568 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .ai-desc {
            max-width: 600px;
            margin: 0 auto;
            color: var(--secondary);
            font-size: 18px;
        }

        /* --- 核心功能区：功能卡片 --- */
        .feature-section {
            padding: 80px 0;
        }

        /* 1. AI 自动发文 - 左右布局展示“自动化” */
        .feature-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
            margin-bottom: 120px;
        }

        .feature-content h3 {
            font-size: 32px;
            margin-bottom: 20px;
            font-weight: 400;
        }

        .feature-list {
            list-style: none;
            padding: 0;
            margin: 30px 0;
        }

        .feature-list li {
            margin-bottom: 15px;
            display: flex;
            align-items: center;
            color: #444;
        }

        .feature-list li::before {
            content: '✓';
            color: var(--accent);
            font-weight: bold;
            margin-right: 12px;
        }

        /* 模拟软件界面的容器 */
        .interface-mockup {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 12px;
            box-shadow: 0 20px 50px rgba(0,0,0,0.05);
            padding: 30px;
            position: relative;
            overflow: hidden;
        }

        /* 装饰元素：模拟正在生成的文章 */
        .typing-effect {
            font-family: 'Courier New', monospace; /* 等宽字体模拟代码/打字机 */
            font-size: 14px;
            color: #555;
            line-height: 1.8;
        }
        
        .typing-line {
            height: 12px;
            background: #f0f0f0;
            margin-bottom: 10px;
            border-radius: 4px;
            width: 100%;
        }
        .typing-line.short { width: 60%; }
        .typing-line.active {
            background: linear-gradient(90deg, #f0f0f0 0%, #e2e8f0 50%, #f0f0f0 100%);
            background-size: 200% 100%;
            animation: loading 1.5s infinite;
        }

        @keyframes loading {
            0% { background-position: 200% 0; }
            100% { background-position: -200% 0; }
        }

        /* 2. AI 翻译 - 对比布局 */
        .translation-demo {
            display: flex;
            gap: 20px;
            margin-top: 30px;
        }
        
        .trans-card {
            flex: 1;
            background: #f9fafb;
            padding: 20px;
            border-radius: 8px;
            font-size: 14px;
        }
        
        .trans-label {
            font-size: 10px;
            text-transform: uppercase;
            color: #999;
            margin-bottom: 10px;
            display: block;
            letter-spacing: 1px;
        }

        /* --- 未来展望区：网格布局 --- */
        .roadmap-section {
            background: #fff;
            border-top: 1px solid var(--border);
            padding: 80px 0;
        }

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

        .roadmap-item {
            padding: 30px;
            border: 1px solid var(--border);
            border-radius: 8px;
            transition: all 0.3s;
        }

        .roadmap-item:hover {
            border-color: var(--accent);
            transform: translateY(-5px);
        }

        .roadmap-icon {
            width: 40px;
            height: 40px;
            background: var(--accent-light);
            color: var(--accent);
            border-radius: 8px;
            display: flex;
            justify-content: center;
            align-items: center;
            margin-bottom: 20px;
            font-size: 20px;
        }

        .roadmap-title {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 10px;
        }

        .roadmap-desc {
            font-size: 14px;
            color: var(--secondary);
        }
        
        .coming-soon-tag {
            font-size: 10px;
            background: #eee;
            padding: 2px 6px;
            border-radius: 4px;
            margin-left: 8px;
            vertical-align: middle;
            color: #777;
        }

        /* 响应式 */
        @media (max-width: 768px) {
            .feature-block { grid-template-columns: 1fr; }
            .roadmap-grid { grid-template-columns: 1fr; }
            .ai-title { font-size: 36px; }
        }