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

    body {
        font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Microsoft YaHei', sans-serif;
        line-height: 1.6;
        color: #333;
    }

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

    /* Header */
    header {
        background: #fff;
        color: #5f6368;
        padding: 1rem 0;
        position: sticky;
        top: 0;
        z-index: 100;
        box-shadow: 0 1px 3px rgba(0,0,0,0.12);
        border-bottom: 1px solid #e8eaed;
    }

    .header-content {
        display: flex;
        justify-content: space-between;
        align-items: center;
    }

    .logo {
        display: flex;
        align-items: center;
        gap: 12px;
        font-size: 24px;
        font-weight: 700;
        color: #5f6368;
    }

    .logo img {
        width: 40px;
        height: 40px;
    }

    nav ul {
        display: flex;
        list-style: none;
        gap: 2rem;
    }

    nav a {
        color: #5f6368;
        text-decoration: none;
        font-weight: 500;
        transition: color 0.3s;
    }

    nav a:hover {
        color: #1a73e8;
    }

    /* Hero Section */
    .hero {
        background: linear-gradient(135deg, #4285f4 0%, #34a853 100%);
        color: white;
        padding: 100px 0;
        text-align: center;
    }

    .hero h1 {
        font-size: 5rem;
        margin-bottom: 10rem;
        font-weight: 800;
    }

    .hero p {
        font-size: 3rem;
        margin-bottom: 10rem;
        opacity: 0.95;
    }

    .cta-button {
        display: inline-block;
        background: white;
        color: #1a73e8;
        padding: 15px 40px;
        border-radius: 50px;
        text-decoration: none;
        font-weight: 600;
        font-size: 1.1rem;
        transition: transform 0.3s, box-shadow 0.3s;
    }

    .cta-button:hover {
        transform: translateY(-3px);
        box-shadow: 0 10px 25px rgba(0,0,0,0.2);
    }

    /* Sections */
    section {
        padding: 80px 0;
    }

    section:nth-child(even) {
        background: #f8f9fa;
    }

    h2 {
        font-size: 2.5rem;
        margin-bottom: 3rem;
        text-align: center;
        color: #2c3e50;
    }

    h3 {
        font-size: 1.8rem;
        margin-bottom: 1rem;
        color: #1a73e8;
    }

    h4 {
        font-size: 1.3rem;
        margin-bottom: 0.8rem;
        color: #555;
    }

    /* What is Section */
    .what-is-content {
        max-width: 900px;
        margin: 0 auto;
        text-align: center;
    }

    .what-is-content p {
        font-size: 1.15rem;
        line-height: 1.8;
        margin-bottom: 1.5rem;
    }

    .feature-image {
        width: 100%;
        max-width: 800px;
        margin: 30px auto;
        display: block;
        border-radius: 10px;
        box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    }

    /* Why Section */
    .why-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
        gap: 2rem;
        margin-top: 3rem;
    }

    .why-item {
        background: white;
        padding: 2rem;
        border-radius: 10px;
        box-shadow: 0 5px 15px rgba(0,0,0,0.08);
    }

    .why-item h3 {
        margin-bottom: 1rem;
    }

    /* Features Section */
    .features-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 2rem;
    }

    .feature-card {
        background: white;
        padding: 2rem;
        border-radius: 10px;
        box-shadow: 0 5px 15px rgba(0,0,0,0.08);
        transition: transform 0.3s;
    }

    .feature-card:hover {
        transform: translateY(-5px);
    }

    .feature-icon {
        font-size: 3rem;
        margin-bottom: 1rem;
    }

    /* How to Section */
    .how-to-steps {
        max-width: 800px;
        margin: 0 auto;
    }

    .step {
        display: flex;
        gap: 2rem;
        margin-bottom: 2.5rem;
        align-items: start;
    }

    .step-number {
        background: #1a73e8;
        color: white;
        width: 50px;
        height: 50px;
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 1.5rem;
        font-weight: 700;
        flex-shrink: 0;
    }

    .step-content h3 {
        margin-top: 0;
    }

    /* Pricing Section */
    .pricing-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 2rem;
        max-width: 1000px;
        margin: 0 auto;
    }

    .pricing-card {
        background: white;
        padding: 2.5rem 2rem;
        border-radius: 15px;
        box-shadow: 0 5px 20px rgba(0,0,0,0.1);
        text-align: center;
        transition: transform 0.3s;
    }

    .pricing-card:hover {
        transform: translateY(-5px);
    }

    .pricing-card.featured {
        border: 3px solid #1a73e8;
        position: relative;
    }

    .pricing-card h3 {
        margin-bottom: 1.5rem;
    }

    .price {
        font-size: 2.5rem;
        font-weight: 700;
        color: #1a73e8;
        margin-bottom: 1rem;
    }

    .price-unit {
        font-size: 1rem;
        color: #666;
    }

    .pricing-features {
        list-style: none;
        margin: 2rem 0;
        text-align: left;
    }

    .pricing-features li {
        padding: 0.5rem 0;
        border-bottom: 1px solid #eee;
    }

    .pricing-features li:before {
        content: "✓ ";
        color: #34a853;
        font-weight: bold;
        margin-right: 8px;
    }

    /* FAQ Section */
    .faq-container {
        max-width: 800px;
        margin: 0 auto;
    }

    .faq-item {
        background: white;
        margin-bottom: 1.5rem;
        border-radius: 10px;
        overflow: hidden;
        box-shadow: 0 3px 10px rgba(0,0,0,0.08);
    }

    .faq-question {
        padding: 1.5rem;
        cursor: pointer;
        font-weight: 600;
        font-size: 1.1rem;
        display: flex;
        justify-content: space-between;
        align-items: center;
    }

    .faq-question:hover {
        background: #f8f9fa;
    }

    .faq-answer {
        padding: 0 1.5rem 1.5rem;
        line-height: 1.8;
    }

    /* Footer */
    footer {
        background: #2c3e50;
        color: white;
        padding: 3rem 0 1.5rem;
        text-align: center;
    }

    .footer-content {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 2rem;
        margin-bottom: 2rem;
    }

    .footer-section h4 {
        color: white;
        margin-bottom: 1rem;
    }

    .footer-section ul {
        list-style: none;
    }

    .footer-section a {
        color: #bdc3c7;
        text-decoration: none;
        transition: color 0.3s;
    }

    .footer-section a:hover {
        color: white;
    }

    .copyright {
        padding-top: 2rem;
        border-top: 1px solid #34495e;
        color: #bdc3c7;
    }
 @media (min-width: 768px) {
.sj{display:none;}
}
    @media (max-width: 768px) {
        .hero h1 {
            font-size: 3rem;
        }
.sj{display:block;}
        nav ul {
            display: none;
        }
.what-is-content img{max-width:100%;}
        .features-grid, .pricing-grid {
            grid-template-columns: 1fr;
        }
    }