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

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
            background: #f5f5f7;
            color: #1d1d1f;
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

        .container {
            max-width: 1150px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* Header */
        .header {
            background: #fff;
            border-bottom: 1px solid #e5e5e7;
            padding: 16px 0;
            position: sticky;
            top: 0;
            z-index: 100;
        }

        .logo {
            height: 44px;
            transition: transform 0.3s ease;
            display: block;
        }

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

        /* Hero Section - 100%宽白色背景 */
        .hero {
            background: #fff;
            padding: 80px 0;
            border-bottom: 1px solid #e5e5e7;
        }

        .hero-content {
            display: flex;
            align-items: center;
            gap: 50px;
            max-width: 1150px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .hero-text {
            flex: 1;
        }

        .product-header {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 20px;
        }

        .product-logo {
            width: 64px;
            height: 64px;
            border-radius: 200px;
            object-fit: cover;
            border: 1px solid #e5e5e7;
            flex-shrink: 0;
            box-shadow: 0 4px 12px rgba(0,0,0,0.06);
        }

        .product-name {
            font-size: 2.5rem;
            font-weight: 800;
            color: #1d1d1f;
            margin: 0;
            letter-spacing: -1.5px;
        }

        .product-description {
            font-size: 1rem;
            color: #515154;
            margin-bottom: 20px;
            line-height: 1.8;
            
            position: relative;
            padding: 20px 24px 20px 52px;
            background: #f9f9fb;
            border-radius: 12px;
        }
        
        .product-description::before {
    content: '"';
    position: absolute;
    left: 18px;
    top: 8px;
    font-size: 42px;
    color: #0071e3;
    font-family: Georgia, serif;
    line-height: 1;
    opacity: 0.4;
}



        .buttons {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 14px 28px;
            text-decoration: none;
            border-radius: 12px;
            font-weight: 600;
            transition: all 0.25s ease;
            font-size: 1.5rem;
            border: none;
            cursor: pointer;
            letter-spacing: -0.2px;
        }

        .btn-primary {
            background: #0071e3;
            color: white;
        }

        .btn-primary:hover {
            background: #0077ed;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(0,113,227,0.25);
        }

        .btn-download {
            background: #fff;
            color: #1d1d1f;
            border: 2px solid #d2d2d7;
        }

        .btn-download:hover {
            background: #f5f5f7;
            border-color: #86868b;
            transform: translateY(-2px);
        }

        .hero-image {
            flex-shrink: 0;
        }

        .screenshot {
            width: 500px;
            height: 300px;
            border-radius: 20px;
            padding: 10px;
            border: 1px solid #e5e5e7;
            object-fit: cover;
            transition: all 0.4s ease;
        }

        .screenshot:hover {
            transform: translateY(-6px);
            box-shadow: 0 30px 70px rgba(0,0,0,0.14);
        }

        /* 内容区域 - 100%宽白色背景 */
        .main-wrapper {
            background: #fff;
            border-bottom: 1px solid #e5e5e7;
        }

        .main-content {
            max-width: 1200px;
            margin: 0 auto;
            padding: 80px 24px;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 48px;
            text-align: center;
            color: #1d1d1f;
            letter-spacing: -0.5px;
        }

        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 20px;
        }

        .feature-card {
            padding: 32px;
            border-radius: 16px;
            transition: all 0.3s ease;
            background: #ffffff;
            border: 1px solid #f0f0f2;
        }

        .feature-card:hover {
            background: #f6f6f6;
            border-color: #e5e5e7;
            box-shadow: 0 8px 30px rgba(0,0,0,0.06);
            transform: translateY(-4px);
        }

        .feature-title {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: #1d1d1f;
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .feature-icon {
            font-size: 24px;
            width: 44px;
            height: 44px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: #fff;
            border-radius: 12px;
            flex-shrink: 0;
            border: 1px solid #e5e5e7;
        }

        .feature-text {
            color: #515154;
            font-size: 0.95rem;
            line-height: 1.7;
            padding-left: 56px;
        }

        /* Footer - 白色 */
        .footer {
            background: #fff;
            padding: 40px 0;
            text-align: center;
            border-top: 1px solid #e5e5e7;
        }

        .copyright {
            color: #86868b;
            font-size: 0.875rem;
        }

        /* Mobile Responsive */
        @media (max-width: 768px) {
            .hero {
                padding: 48px 0;
            }

            .hero-content {
                flex-direction: column;
                text-align: center;
                gap: 36px;
                padding: 0 20px;
            }

            .product-header {
                flex-direction: column;
                gap: 14px;
                text-align: center;
            }

            .product-logo {
                width: 100px;
                height: 100px;
            }

            .product-name {
                font-size: 2.4rem;
            }

            .product-description {
                font-size: 1rem;
                margin-bottom: 28px;
                padding: 16px 20px 16px 44px;
        text-align: left;
            }
            

    .product-description::before {
        left: 14px;
        top: 6px;
        font-size: 36px;
    }


            .screenshot {
                width: 100%;
                max-width: 400px;
                height: auto;
                aspect-ratio: 5/3;
            }

            .main-content {
                padding: 48px 20px;
            }

            .features-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }

            .feature-card {
                padding: 24px;
            }

            .feature-text {
                padding-left: 0;
            }

            .buttons {
                justify-content: center;
                flex-direction: column;
                align-items: center;
            }

            .btn {
                width: 100%;
                max-width: 280px;
            }

            .section-title {
                font-size: 1.6rem;
            }
        }
    </style>    <style>
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
            background: #f5f5f7;
            color: #1d1d1f;
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

        .container {
            max-width: 1150px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* Header */
        .header {
            background: #fff;
            border-bottom: 1px solid #e5e5e7;
            padding: 16px 0;
            position: sticky;
            top: 0;
            z-index: 100;
        }

        .logo {
            height: 44px;
            transition: transform 0.3s ease;
            display: block;
        }

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

        /* Hero Section - 100%宽白色背景 */
        .hero {
            background: #fff;
            padding: 80px 0;
            border-bottom: 1px solid #e5e5e7;
        }

        .hero-content {
            display: flex;
            align-items: center;
            gap: 50px;
            max-width: 1150px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .hero-text {
            flex: 1;
        }

        .product-header {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 20px;
        }

        .product-logo {
            width: 64px;
            height: 64px;
            border-radius: 200px;
            object-fit: cover;
            border: 1px solid #e5e5e7;
            flex-shrink: 0;
            box-shadow: 0 4px 12px rgba(0,0,0,0.06);
        }

        .product-name {
            font-size: 2.5rem;
            font-weight: 800;
            color: #1d1d1f;
            margin: 0;
            letter-spacing: -1.5px;
        }

        .product-description {
            font-size: 1rem;
            color: #515154;
            margin-bottom: 20px;
            line-height: 1.8;
            
            position: relative;
            padding: 20px 24px 20px 52px;
            background: #f9f9fb;
            border-radius: 12px;
        }
        
        .product-description::before {
    content: '"';
    position: absolute;
    left: 18px;
    top: 8px;
    font-size: 42px;
    color: #0071e3;
    font-family: Georgia, serif;
    line-height: 1;
    opacity: 0.4;
}



        .buttons {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 14px 28px;
            text-decoration: none;
            border-radius: 12px;
            font-weight: 600;
            transition: all 0.25s ease;
            font-size: 1.5rem;
            border: none;
            cursor: pointer;
            letter-spacing: -0.2px;
        }

        .btn-primary {
            background: #0071e3;
            color: white;
        }

        .btn-primary:hover {
            background: #0077ed;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(0,113,227,0.25);
        }

        .btn-download {
            background: #fff;
            color: #1d1d1f;
            border: 2px solid #d2d2d7;
        }

        .btn-download:hover {
            background: #f5f5f7;
            border-color: #86868b;
            transform: translateY(-2px);
        }

        .hero-image {
            flex-shrink: 0;
        }

        .screenshot {
            width: 500px;
            height: 300px;
            border-radius: 20px;
            padding: 10px;
            border: 1px solid #e5e5e7;
            object-fit: cover;
            transition: all 0.4s ease;
        }

        .screenshot:hover {
            transform: translateY(-6px);
            box-shadow: 0 30px 70px rgba(0,0,0,0.14);
        }

        /* 内容区域 - 100%宽白色背景 */
        .main-wrapper {
            background: #fff;
            border-bottom: 1px solid #e5e5e7;
        }

        .main-content {
            max-width: 1200px;
            margin: 0 auto;
            padding: 80px 24px;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 48px;
            text-align: center;
            color: #1d1d1f;
            letter-spacing: -0.5px;
        }

        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 20px;
        }

        .feature-card {
            padding: 32px;
            border-radius: 16px;
            transition: all 0.3s ease;
            background: #ffffff;
            border: 1px solid #f0f0f2;
        }

        .feature-card:hover {
            background: #f6f6f6;
            border-color: #e5e5e7;
            box-shadow: 0 8px 30px rgba(0,0,0,0.06);
            transform: translateY(-4px);
        }

        .feature-title {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: #1d1d1f;
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .feature-icon {
            font-size: 24px;
            width: 44px;
            height: 44px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: #fff;
            border-radius: 12px;
            flex-shrink: 0;
            border: 1px solid #e5e5e7;
        }

        .feature-text {
            color: #515154;
            font-size: 0.95rem;
            line-height: 1.7;
            padding-left: 56px;
        }

        /* Footer - 白色 */
        .footer {
            background: #fff;
            padding: 40px 0;
            text-align: center;
            border-top: 1px solid #e5e5e7;
        }

        .copyright {
            color: #86868b;
            font-size: 0.875rem;
        }

        /* Mobile Responsive */
        @media (max-width: 768px) {
            .hero {
                padding: 48px 0;
            }

            .hero-content {
                flex-direction: column;
                text-align: center;
                gap: 36px;
                padding: 0 20px;
            }

            .product-header {
                flex-direction: column;
                gap: 14px;
                text-align: center;
            }

            .product-logo {
                width: 100px;
                height: 100px;
            }

            .product-name {
                font-size: 2.4rem;
            }

            .product-description {
                font-size: 1rem;
                margin-bottom: 28px;
                padding: 16px 20px 16px 44px;
        text-align: left;
            }
            

    .product-description::before {
        left: 14px;
        top: 6px;
        font-size: 36px;
    }


            .screenshot {
                width: 100%;
                max-width: 400px;
                height: auto;
                aspect-ratio: 5/3;
            }

            .main-content {
                padding: 48px 20px;
            }

            .features-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }

            .feature-card {
                padding: 24px;
            }

            .feature-text {
                padding-left: 0;
            }

            .buttons {
                justify-content: center;
                flex-direction: column;
                align-items: center;
            }

            .btn {
                width: 100%;
                max-width: 280px;
            }

            .section-title {
                font-size: 1.6rem;
            }
        }