* {
        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;
        line-height: 1.6;
        color: #333;
    }

    /* Hero Section */
    .hero {
        background: linear-gradient(135deg, #2563eb 0%, #3b82f6 35%, #60a5fa 70%, #93c5fd 100%);
        color: white;
        padding: 120px 0 100px;
        position: relative;
        overflow: hidden;
    }

    .hero::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: 
            radial-gradient(circle at 20% 80%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
            radial-gradient(circle at 80% 20%, rgba(255, 255, 255, 0.08) 0%, transparent 50%),
            radial-gradient(circle at 40% 40%, rgba(255, 255, 255, 0.05) 0%, transparent 50%);
        animation: float 20s ease-in-out infinite;
    }

    @keyframes float {
        0%, 100% { transform: translateX(0) translateY(0); }
        25% { transform: translateX(-10px) translateY(-5px); }
        50% { transform: translateX(10px) translateY(-10px); }
        75% { transform: translateX(-5px) translateY(-3px); }
    }

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

    .hero-content {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 60px;
        align-items: center;
        position: relative;
        z-index: 1;
    }

    .hero-text h1 {
        font-size: 3.5em;
        font-weight: 800;
        margin-bottom: 20px;
        background: linear-gradient(45deg, #ffffff 0%, #f0f9ff 50%, #ffffff 100%);
        background-clip: text;
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        animation: fadeInUp 1s ease-out;
        text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
        letter-spacing: -0.02em;
    }

    .hero-text .subtitle {
        font-size: 1.4em;
        font-weight: 500;
        margin-bottom: 30px;
        opacity: 0.95;
        color: #f1f5f9;
        animation: fadeInUp 1s ease-out 0.2s both;
        letter-spacing: 0.01em;
    }

    .hero-text .description {
        font-size: 1.15em;
        font-weight: 400;
        margin-bottom: 40px;
        opacity: 0.88;
        line-height: 1.8;
        color: #e2e8f0;
        animation: fadeInUp 1s ease-out 0.4s both;
        max-width: 90%;
    }

    .cta-buttons {
        display: flex;
        gap: 20px;
        animation: fadeInUp 1s ease-out 0.6s both;
    }

    .btn {
        padding: 15px 32px;
        border: none;
        border-radius: 50px;
        font-size: 1.1em;
        font-weight: 600;
        cursor: pointer;
        transition: all 0.3s ease;
        text-decoration: none;
        display: inline-block;
    }

    .btn-primary {
        background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
        color: #1e40af;
        box-shadow: 0 4px 15px rgba(255, 255, 255, 0.4), 0 2px 4px rgba(0, 0, 0, 0.1);
        font-weight: 600;
        border: 1px solid rgba(255, 255, 255, 0.2);
    }

    .btn-primary:hover {
        transform: translateY(-2px);
        box-shadow: 0 6px 20px rgba(255, 255, 255, 0.5), 0 4px 8px rgba(0, 0, 0, 0.15);
        background: linear-gradient(135deg, #ffffff 0%, #f1f5f9 100%);
    }

    .btn-secondary {
        background: rgba(255, 255, 255, 0.15);
        color: white;
        border: 2px solid rgba(255, 255, 255, 0.4);
        backdrop-filter: blur(10px);
        font-weight: 500;
    }

    .btn-secondary:hover {
        background: rgba(255, 255, 255, 0.25);
        border-color: rgba(255, 255, 255, 0.6);
        transform: translateY(-2px);
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    }

    .hero-visual {
        position: relative;
        animation: fadeInRight 1s ease-out 0.3s both;
    }

    .ai-illustration {
        width: 100%;
        height: 400px;
        background: rgba(255, 255, 255, 0.12);
        border-radius: 24px;
        display: flex;
        align-items: center;
        justify-content: center;
        backdrop-filter: blur(20px);
        border: 1px solid rgba(255, 255, 255, 0.25);
        position: relative;
        overflow: hidden;
        box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    }

    .ai-illustration::before {
        content: '🤖';
        font-size: 8em;
        opacity: 0.4;
        animation: pulse 2s ease-in-out infinite;
        filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
    }

    .floating-elements {
        position: absolute;
        inset: 0;
    }

    .floating-element {
    position: absolute;
    /* 增强背景不透明度和添加边框 */
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid rgba(255, 255, 255, 0.95);
    border-radius: 12px;
    padding: 12px 18px;
    font-size: 0.9em;
    /* 改为深色文字确保对比度 */
    color: #1e40af;
    font-weight: 600;
    animation: floatElement 6s ease-in-out infinite;
    backdrop-filter: blur(15px);
    /* 添加阴影增强视觉层次 */
    box-shadow: 
        0 4px 12px rgba(0, 0, 0, 0.15),
        0 1px 3px rgba(0, 0, 0, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.8);
    /* 确保文字始终可读 */
    text-shadow: 0 1px 2px rgba(255, 255, 255, 0.8);
    /* 防止文字模糊 */
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    }

    /* 保持原有的定位样式 */
    .floating-element:nth-child(1) {
        top: 20px;
        left: 20px;
        animation-delay: 0s;
        background: rgba(255, 255, 255, 0.92);
    }

    .floating-element:nth-child(2) {
        top: 60px;
        right: 30px;
        animation-delay: 2s;
        background: rgba(248, 250, 252, 0.9);
    }

    .floating-element:nth-child(3) {
        bottom: 80px;
        left: 40px;
        animation-delay: 4s;
        background: rgba(255, 255, 255, 0.88);
    }

    .floating-element:nth-child(4) {
        bottom: 40px;
        right: 20px;
        animation-delay: 1s;
        background: rgba(241, 245, 249, 0.9);
    }

    /* 悬停效果增强 */
    .floating-element:hover {
        background: rgba(255, 255, 255, 0.95);
        color: #1d4ed8;
        transform: translateY(-2px);
        box-shadow: 
            0 6px 16px rgba(0, 0, 0, 0.2),
            0 2px 4px rgba(0, 0, 0, 0.1),
            inset 0 1px 0 rgba(255, 255, 255, 0.9);
    }

    /* 为不同位置的元素添加细微的样式变化 */
    .floating-element:nth-child(1) {
        background: rgba(255, 255, 255, 0.92);
    }

    .floating-element:nth-child(2) {
        background: rgba(248, 250, 252, 0.9);
    }

    .floating-element:nth-child(3) {
        background: rgba(255, 255, 255, 0.88);
    }

    .floating-element:nth-child(4) {
        background: rgba(241, 245, 249, 0.9);
    }


    @keyframes floatElement {
        0%, 100% { transform: translateY(0) rotate(0deg); opacity: 0.6; }
        50% { transform: translateY(-10px) rotate(2deg); opacity: 1; }
    }

    /* Features Section */
    .features {
        padding: 100px 0;
        background: #f8faff;
    }

    .section-header {
        text-align: center;
        margin-bottom: 80px;
    }

    .section-title {
        font-size: 2.5em;
        font-weight: 700;
        color: #1e3a8a;
        margin-bottom: 20px;
    }

    .section-subtitle {
        font-size: 1.2em;
        color: #64748b;
        max-width: 600px;
        margin: 0 auto;
    }

    .features-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
        gap: 40px;
    }

    .feature-card {
        background: white;
        padding: 40px 30px;
        border-radius: 20px;
        box-shadow: 0 10px 30px rgba(30, 58, 138, 0.1);
        transition: all 0.3s ease;
        position: relative;
        overflow: hidden;
    }

    .feature-card::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        height: 4px;
        background: linear-gradient(90deg, #3b82f6, #60a5fa);
    }

    .feature-card:hover {
        transform: translateY(-10px);
        box-shadow: 0 20px 40px rgba(30, 58, 138, 0.15);
    }

    .feature-icon {
        width: 80px;
        height: 80px;
        background: linear-gradient(135deg, #3b82f6, #1e3a8a);
        border-radius: 20px;
        display: flex;
        align-items: center;
        justify-content: center;
        margin-bottom: 25px;
        font-size: 2em;
        color: white;
    }

    .feature-card h3 {
        font-size: 1.4em;
        font-weight: 600;
        color: #1e3a8a;
        margin-bottom: 15px;
    }

    .feature-card p {
        color: #64748b;
        line-height: 1.7;
    }

    /* Process Section */
    .process {
        padding: 100px 0;
        background: white;
    }

    .process-steps {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 40px;
        margin-top: 60px;
    }

    .process-step {
        text-align: center;
        position: relative;
    }

    .step-number {
        width: 60px;
        height: 60px;
        background: linear-gradient(135deg, #3b82f6, #1e3a8a);
        color: white;
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 1.5em;
        font-weight: bold;
        margin: 0 auto 20px;
    }

    .process-step h4 {
        font-size: 1.3em;
        color: #1e3a8a;
        margin-bottom: 15px;
    }

    .process-step p {
        color: #64748b;
        line-height: 1.6;
    }

    /* CTA Section */
    .cta-section {
        background: linear-gradient(135deg, #1e3a8a, #3b82f6);
        color: white;
        padding: 80px 0;
        text-align: center;
        position: relative;
    }

    .cta-content {
        position: relative;
        z-index: 1;
    }

    .cta-content h2 {
        font-size: 2.5em;
        font-weight: 700;
        margin-bottom: 20px;
        color: white;
    }

    .cta-content p {
        font-size: 1.2em;
        margin-bottom: 40px;
        opacity: 0.95;
        color: white;
        max-width: 600px;
        margin-left: auto;
        margin-right: auto;
        margin-bottom: 40px;
    }

    .cta-section .cta-buttons {
        display: flex;
        justify-content: center;
        gap: 20px;
    }

    .cta-section .btn-primary {
        background: white;
        color: #1e3a8a;
        border: none;
    }

    .cta-section .btn-secondary {
        background: transparent;
        color: white;
        border: 2px solid rgba(255, 255, 255, 0.8);
    }

    .cta-section .btn-secondary:hover {
        background: rgba(255, 255, 255, 0.1);
        border-color: white;
    }

    /* Responsive Design */
    @media (max-width: 768px) {
        .floating-element {
        font-size: 0.8em;
        padding: 10px 14px;
        background: rgba(255, 255, 255, 0.95);
        color: #1e40af;
        font-weight: 600;
    }

        .hero-content {
            grid-template-columns: 1fr;
            gap: 40px;
            text-align: center;
        }

        .hero-text h1 {
            font-size: 2.5em;
        }

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

        .process-steps {
            grid-template-columns: 1fr;
        }

        .testimonials-grid {
            grid-template-columns: 1fr;
        }

        .stats-grid {
            grid-template-columns: repeat(2, 1fr);
        }

        .advantages-grid {
            grid-template-columns: 1fr;
        }

        .comparison {
            grid-template-columns: 1fr;
            gap: 10px;
        }

        .cta-buttons {
            flex-direction: column;
            align-items: center;
        }
        
        .cta-section .cta-buttons {
            flex-direction: column;
            align-items: center;
        }

        @media (max-width: 480px) {
            .stats-grid {
                grid-template-columns: 1fr;
            }
        }
    }

    @keyframes fadeInUp {
        from {
            opacity: 0;
            transform: translateY(30px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }

    @keyframes fadeInRight {
        from {
            opacity: 0;
            transform: translateX(30px);
        }
        to {
            opacity: 1;
            transform: translateX(0);
        }
    }

    @keyframes pulse {
        0%, 100% { transform: scale(1); }
        50% { transform: scale(1.05); }
    }

    /* Testimonials Section */
    .testimonials {
        padding: 100px 0;
        background: linear-gradient(135deg, #f1f5f9 0%, #e2e8f0 100%);
        position: relative;
    }

    .testimonials-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
        gap: 30px;
        margin-top: 60px;
    }

    .testimonial-card {
        background: white;
        padding: 30px;
        border-radius: 20px;
        box-shadow: 0 8px 25px rgba(30, 58, 138, 0.08);
        transition: all 0.3s ease;
        position: relative;
        border: 1px solid rgba(59, 130, 246, 0.1);
    }

    .testimonial-card:hover {
        transform: translateY(-5px);
        box-shadow: 0 15px 35px rgba(30, 58, 138, 0.12);
    }

    .testimonial-card::before {
        content: '"';
        position: absolute;
        top: -10px;
        left: 20px;
        font-size: 4em;
        color: #3b82f6;
        opacity: 0.3;
        font-family: Georgia, serif;
    }

    .testimonial-content {
        margin-bottom: 25px;
        font-size: 1.1em;
        line-height: 1.7;
        color: #374151;
        font-style: italic;
        position: relative;
        z-index: 1;
    }

    .testimonial-author {
        display: flex;
        align-items: center;
        gap: 15px;
    }

    .author-avatar {
        width: 50px;
        height: 50px;
        border-radius: 50%;
        background: linear-gradient(135deg, #3b82f6, #1e3a8a);
        display: flex;
        align-items: center;
        justify-content: center;
        color: white;
        font-weight: bold;
        font-size: 1.2em;
    }

    .author-info h4 {
        font-size: 1.1em;
        font-weight: 600;
        color: #1e3a8a;
        margin-bottom: 2px;
    }

    .author-info p {
        color: #64748b;
        font-size: 0.9em;
    }

    .rating {
        display: flex;
        gap: 3px;
        margin-top: 5px;
    }

    .star {
        color: #fbbf24;
        font-size: 1.1em;
    }

    /* Stats Section */
    .stats {
        background: #1e3a8a;
        color: white;
        padding: 60px 0;
        margin-top: 0;
    }

    .stats-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        gap: 40px;
        text-align: center;
    }

    .stat-item h3 {
        font-size: 3em;
        font-weight: 700;
        margin-bottom: 10px;
        color: #60a5fa;
    }

    .stat-item p {
        font-size: 1.1em;
        opacity: 0.9;
    }

    /* Advantages Section */
    .advantages {
        padding: 100px 0;
        background: white;
        position: relative;
        overflow: hidden;
    }

    .advantages::before {
        content: '';
        position: absolute;
        top: 0;
        right: -50%;
        width: 100%;
        height: 100%;
        background: linear-gradient(135deg, transparent 0%, rgba(59, 130, 246, 0.03) 50%, transparent 100%);
        transform: rotate(15deg);
        pointer-events: none;
    }

    .advantages-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
        gap: 50px;
        margin-top: 60px;
        position: relative;
        z-index: 1;
    }

    .advantage-card {
        text-align: center;
        padding: 40px 30px;
        position: relative;
        transition: all 0.4s ease;
    }

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

    .advantage-icon {
        width: 120px;
        height: 120px;
        margin: 0 auto 30px;
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 3em;
        color: white;
        position: relative;
        transition: all 0.4s ease;
    }

    .advantage-card:nth-child(1) .advantage-icon {
        background: linear-gradient(135deg, #3b82f6, #1d4ed8);
        box-shadow: 0 20px 40px rgba(59, 130, 246, 0.3);
    }

    .advantage-card:nth-child(2) .advantage-icon {
        background: linear-gradient(135deg, #10b981, #059669);
        box-shadow: 0 20px 40px rgba(16, 185, 129, 0.3);
    }

    .advantage-card:nth-child(3) .advantage-icon {
        background: linear-gradient(135deg, #f59e0b, #d97706);
        box-shadow: 0 20px 40px rgba(245, 158, 11, 0.3);
    }

    .advantage-card:hover .advantage-icon {
        transform: scale(1.1) rotateY(10deg);
        box-shadow: 0 30px 60px rgba(0, 0, 0, 0.2);
    }

    .advantage-card h3 {
        font-size: 1.8em;
        font-weight: 700;
        color: #1e3a8a;
        margin-bottom: 20px;
        position: relative;
    }

    .advantage-card h3::after {
        content: '';
        position: absolute;
        bottom: -8px;
        left: 50%;
        transform: translateX(-50%);
        width: 50px;
        height: 3px;
        background: linear-gradient(90deg, #3b82f6, #60a5fa);
        border-radius: 2px;
    }

    .advantage-card p {
        color: #64748b;
        line-height: 1.8;
        font-size: 1.1em;
        margin-bottom: 25px;
    }

    .advantage-features {
        list-style: none;
        padding: 0;
        text-align: left;
        max-width: 280px;
        margin: 0 auto;
    }

    .advantage-features li {
        padding: 8px 0;
        color: #374151;
        position: relative;
        padding-left: 25px;
        font-size: 0.95em;
    }

    .advantage-features li::before {
        content: '✓';
        position: absolute;
        left: 0;
        color: #10b981;
        font-weight: bold;
        font-size: 1.1em;
    }

    .vs-traditional {
        background: rgba(59, 130, 246, 0.05);
        border: 2px solid rgba(59, 130, 246, 0.1);
        border-radius: 15px;
        padding: 20px;
        margin-top: 25px;
    }

    .vs-traditional h4 {
        color: #1e3a8a;
        font-size: 1.1em;
        margin-bottom: 10px;
        text-align: center;
    }

    .comparison {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 15px;
        font-size: 0.9em;
    }

    .traditional {
        color: #ef4444;
        text-align: center;
    }

    .ai-solution {
        color: #10b981;
        text-align: center;
        font-weight: 600;
    }

    .comparison-label {
        font-weight: 600;
        margin-bottom: 5px;
        color: #374151;
    }